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.
 Mrs. Frisby and the Rats of NIMH
| 4.11 |
 Z For Zachariah
| 3.86 |
 Mrs. Frisby and the Rats of NIMH
| 4.67 |
 Mrs. Frisby and the Rats of Nimh
| 4 |
 The Silver Crown
| 3.5 |
 The Secret Of NIMH The Secret Of NIMH | 4 |
 Z. for Zachariah
| 0 |
 Z wie Zacharias Z wie Zacharias
| 0 |
Mrs Frisby and the Rats of NIMH Mrs Frisby and the Rats of NIMH
| 5 |
 Mrs. Frisby and the Rats of Nimh - Now Filmed as The Secret of Nimh Mrs. Frisby and the Rats of Nimh - Now Filmed as The Secret of Nimh
| 0 |
 Frau Frisby und die Ratten von NIMH
| 0 |