Robert C. O'Brien has written at least 11 books. Their most popular book is Mrs. Frisby and the Rats of NIMH with 163 saves with an average rating of 4.11⭐.
They are best known for writing in the genres Fantasy, Science fiction, and Young Adult.
Adventurous, tense, and emotional are their most common moods.
#1 of 2 in Rats of NIMH
1971 • 163 Readers • 240 pages • 4.1
1974 • 53 Readers • 68 pages • 3.9
#1 of 2 in Rats of NIMH
1971 • 16 Readers • 240 pages • 4.7
#1 of 2 in Rats of NIMH
1971 • 15 Readers • 240 pages • 4
1968 • 8 Readers • 322 pages • 3.5
1982 • 4 Readers • 32 pages • 4
1 Reader
1992 • 1 Reader • 221 pages
#1 of 2 in Rats of NIMH
1971 • 1 Reader • 197 pages
