Houghton Mifflin Harcourt

January 1, 1943 • Physical Book • 1 Reader • 112 pages • Info 70th Anniversary Gift Set (Book/CD/Downloadable Audio) • 4.2

January 1, 1984 • Physical Book • 1 Reader • 292 pages • Info Media tie-in

September 1, 2020 • Physical Book • 1 Reader • 365 pages • Info Reprint • 4.4

January 1, 2004 • Physical Book • 1 Reader • 342 pages • Info 1 • 2.5

January 1, 2005 • Physical Book • 1 Reader • 212 pages • Info First, First Edition

January 1, 2011 • Physical Book • 1 Reader • 276 pages • Info 1

January 1, 2022 • Physical Book • 1 Reader • 400 pages • 3.2

January 1, 2014 • Physical Book • 1 Reader • 229 pages

January 1, 2000 • Physical Book • 1 Reader • 52 pages • Info Scientists in the Field

January 1, 2018 • Physical Book • 1 Reader • 32 pages • Info Illustrated

April 25, 1988 • Physical Book • 1 Reader • 36 pages • Info Illustrated • 4.2

January 1, 2006 • Physical Book • 1 Reader • 262 pages • Info First Edition • 3.9

January 1, 2012 • Physical Book • 1 Reader • 245 pages • Format Paperback • Info Original

January 1, 2021 • Physical Book • 1 Reader • 291 pages

January 1, 2004 • Physical Book • 1 Reader • 244 pages • Info First, First Edition

January 1, 1999 • Physical Book • 1 Reader • 292 pages • Info Reprint

January 1, 1970 • Physical Book • 1 Reader • 460 pages • Info 7th ptg. • 4

January 1, 2008 • Physical Book • 1 Reader • 32 pages • Info None

March 2, 2021 • Physical Book • 1 Reader • 288 pages • Format Paperback • 3.3

January 1, 2009 • Physical Book • 1 Reader • 388 pages • Info First Edition

January 1, 2004 • Physical Book • 1 Reader • 32 pages • Info 1 • 3

January 1, 1989 • Physical Book • 1 Reader • 28 pages • Format Board book • 3.7

January 1, 1983 • Physical Book • 1 Reader • 609 pages • Info Reprint

January 1, 2013 • Physical Book • 1 Reader • 322 pages • Info First, First Edition

January 1, 2009 • Physical Book • 1 Reader • 40 pages • Info Bilingual

January 1, 2015 • Physical Book • 1 Reader • 40 pages • 4

January 1, 2014 • Physical Book • 1 Reader • 339 pages • Info First Edition • 5

January 1, 2012 • Physical Book • 1 Reader • 637 pages • 3

January 1, 1993 • Physical Book • 1 Reader • 228 pages • Info Reprint

January 1, 1998 • Physical Book • 1 Reader • 32 pages • Info Illustrated • 4.3

January 1, 2013 • Physical Book • 1 Reader • 321 pages • 4.7

January 1, 2018 • Physical Book • 1 Reader • 153 pages

May 1, 2006 • Physical Book • 1 Reader • 340 pages • Info Reprint

January 1, 2009 • Physical Book • 1 Reader • 32 pages • Info First Edition • 3

February 2, 2021 • E-Book • 1 Reader • 397 pages • Format ebook

July 2, 2007 • Physical Book • 1 Reader • 438 pages • Info Magic Carpet • 3.3

January 1, 2014 • Physical Book • 1 Reader • 143 pages • 5

January 1, 2016 • Physical Book • 1 Reader • 268 pages • 3.7

January 1, 2005 • Physical Book • 1 Reader • 241 pages • 3.5

January 1, 1988 • Physical Book • 1 Reader • 220 pages • Info First, First Edition • 3

September 18, 1990 • Physical Book • 1 Reader • 210 pages • 4.2

April 5, 2001 • Physical Book • 1 Reader • 384 pages • Info First Paperback Edition • 3

January 1, 2015 • Physical Book • 1 Reader • 48 pages • 5

January 1, 1997 • Physical Book • 1 Reader • 337 pages • Info First, First Edition • 3

January 1, 2006 • Physical Book • 1 Reader • 245 pages • Info First Edition • 3.9

January 1, 2022 • Physical Book • 1 Reader • 160 pages • 4

January 1, 2022 • Physical Book • 1 Reader • 393 pages

January 1, 2006 • Physical Book • 1 Reader • 403 pages • Info 1, First Printing, First Edition

August 1, 1976 • Physical Book • 1 Reader • 235 pages • Info Reissue • 3.3

January 1, 2006 • Physical Book • 1 Reader • 388 pages • Info First Edition • 4

January 1, 1841 • Physical Book • 1 Reader • 40 pages • Info First, First Edition • 4

January 1, 2018 • Physical Book • 1 Reader • 339 pages • 3.3

January 1, 1986 • Physical Book • 1 Reader • 436 pages

October 1, 1990 • Physical Book • 1 Reader • 28 pages • Format Paperback • 5

January 1, 1955 • Physical Book • 1 Reader • 350 pages • Info Second

January 1, 2009 • Physical Book • 1 Reader • 223 pages • Info Original

February 1, 1981 • Physical Book • 1 Reader • 307 pages • Format Paperback • Info First Mariner Books edition • 3

March 28, 1981 • Physical Book • 1 Reader • 207 pages • Info First

July 1, 1994 • Physical Book • 1 Reader • 377 pages • Info Reissue • 4

January 1, 2001 • Physical Book • 1 Reader • 352 pages • Info Reprint

June 1, 1991 • Physical Book • 1 Reader • 308 pages • 3.8

January 1, 2011 • Physical Book • 1 Reader • 276 pages • Info 1 • 3

January 1, 1981 • Physical Book • 1 Reader • 559 pages

January 1, 2012 • Physical Book • 1 Reader • 237 pages • Info reprint edition • 4

January 1, 2010 • Physical Book • 1 Reader • 247 pages • Info 1

January 1, 1984 • Physical Book • 1 Reader • 36 pages • Info 1 • 5

March 24, 2016 • Physical Book • 1 Reader • 385 pages • 3.3

January 1, 1997 • Physical Book • 1 Reader • 212 pages

January 1, 2008 • Physical Book • 1 Reader • 384 pages • Info First, First Edition • 4.5

January 1, 2008 • Physical Book • 1 Reader • 420 pages • Info First, First Edition • 3

January 1, 2008 • Physical Book • 1 Reader • 52 pages • Info First Edition • 5

January 1, 1977 • Physical Book • 1 Reader • 376 pages • 4

January 1, 2005 • Physical Book • 1 Reader • 284 pages • Info First Edition • 4.5

October 1, 1942 • E-Book • 1 Reader • 723 pages • Format ebook • 3.6

January 13, 1995 • Physical Book • 1 Reader • 364 pages • Info First, First Edition

January 1, 1991 • Physical Book • 1 Reader • 180 pages • Info Reprint • 3

January 1, 2005 • Physical Book • 1 Reader • 304 pages • Info 1st, First Edition

January 1, 2006 • Physical Book • 1 Reader • 323 pages • Info 1, First Edition • 5

January 1, 2007 • Physical Book • 1 Reader • 289 pages • Info 1, First Edition

January 1, 2014 • Physical Book • 1 Reader • 181 pages • Info 1

January 1, 2018 • Physical Book • 1 Reader • 259 pages • Info 1

January 1, 1980 • Physical Book • 1 Reader • 268 pages • Info First, First Edition, Illustrated

January 1, 1965 • Physical Book • 1 Reader • 264 pages • Format Hardcover • 3.6

January 1, 1997 • Physical Book • 1 Reader • 316 pages • Info Reprint • 5

January 1, 1984 • Physical Book • 1 Reader • 230 pages • Info Reissue

January 1, 2011 • E-Book • 1 Reader • 174 pages • Format ebook • 4.3

December 12, 1991 • Physical Book • 1 Reader • 196 pages • 3

January 1, 1942 • Physical Book • 1 Reader • 234 pages • Info First, First Edition • 4.3

January 1, 1982 • Physical Book • 1 Reader • 372 pages • Info First, First Edition, 0

January 1, 2008 • Physical Book • 1 Reader • 275 pages • Info 0 • 3

July 7, 2009 • Physical Book • 1 Reader • 279 pages • Info 1

January 1, 2001 • Physical Book • 1 Reader • 148 pages • Info Reprint • 3

January 1, 2017 • Physical Book • 1 Reader • 186 pages • Info Illustrated • 4.7

January 1, 2013 • Physical Book • 1 Reader • 453 pages • Info 1

January 1, 2014 • Physical Book • 1 Reader • 359 pages • Info First Edition • 3

January 1, 1994 • Physical Book • 1 Reader • 433 pages

January 1, 2008 • Physical Book • 1 Reader • 420 pages • Info First, First Edition

January 1, 2008 • Physical Book • 1 Reader • 288 pages • Info 1 • 4

January 1, 2014 • Physical Book • 1 Reader • 37 pages • Info Illustrated

January 1, 1991 • Physical Book • 1 Reader • 43 pages • Info Illustrated • 5