Popular science and science fiction writer Asimov (1902-92) wrote a three-volume autobiography, but it is now out of print, along with most other accounts of his own life. His widow, also a writer, has collected and excerpted bits from various sources including his letters to her and arranged them by topic rather than chronologically. She includes his favorite story and an essay about science, a chronology, and a bibliography. Annotation c. Book News, Inc., Portland, OR (booknews.com)