O'Brien, Robert C Mrs. Frisby and the rats of Nimh - 1st ed. - New Delhi Puffin books 1986, c1971 - 230 p. : ill. ; 21 cm. ISBN: 9780141333335 (pbk.) : Subjects--Topical Terms: Rats - FictionMice - Fiction Dewey Class. No.: 823 , C9/2