Charles Sheffield

1990 • 17 Readers • 281 pages • 3.7

1997 • 15 Readers • 375 pages • 3.5

2004 • 9 Readers • 448 pages

1998 • 7 Readers • 3.3

1992 • 7 Readers • 372 pages • 3

1985 • 5 Readers • 3

2002 • 5 Readers • 488 pages • 4

1992 • 4 Readers • 261 pages • 3.5

1995 • 4 Readers • 342 pages • 4

1979 • 4 Readers • 3.5

1997 • 4 Readers • 255 pages • 3.3

1991 • 4 Readers • 3.8

1993 • 3 Readers • 352 pages • 3.5

1997 • 3 Readers • 3

2000 • 3 Readers • 314 pages • 3

2013 • 2 Readers • 102 pages • 4

1995 • 2 Readers • 304 pages • 3

1996 • 2 Readers • 288 pages • 4

2 Readers • 2

1997 • 2 Readers • 284 pages • 4

2000 • 2 Readers • 396 pages • 4

1999 • 1 Reader • 497 pages

1 Reader • 3

1980 • 1 Reader

2000 • 1 Reader

2004 • 1 Reader • 464 pages • 2

1994 • 1 Reader • 10 pages • 3

1 Reader

2000 • 1 Reader

2002 • 1 Reader • 144 pages

1993 • 1 Reader • 349 pages • 3

1986 • 1 Reader • 2

1995 • 1 Reader • 697 pages

1994 • 1 Reader • 361 pages

1990 • 1 Reader • 237 pages

1986 • 1 Reader • 482 pages

1986 • 1 Reader • 420 pages • 4

2017 • 1 Reader • 218 pages • 2

2017 • 1 Reader • 212 pages • 3

1985 • 1 Reader • 288 pages • 4

1983 • 1 Reader • 256 pages • 3

1989 • 1 Reader • 261 pages • 3

1978 • 1 Reader • 246 pages • 3

1985 • 1 Reader • 300 pages • 3

1996 • 1 Reader • 286 pages • 5

1988 • 102 pages

1979 • 288 pages

2002 • 962 pages