Christopher Sergel has written at least 8 books. Their most popular book is Up the Down Staircase with 25 saves with an average rating of 4.45⭐.
1964 • 25 Readers • 79 pages • 4.5
1995 • 4 Readers • 136 pages • 5
1970 • 116 pages
1970 • 104 pages
1948 • 84 pages