ISBN 0449243028 books & textbook
2020 Vision
Poul Anderson; Harlan Ellison; Larry Niven; A.E. Vogt; Norman Spinrad; Ben Bova; And Others Jerry Pournelle
Avon Science Fiction /1974-02-01 Mass Market Paperback / 192 Pages
isbn-10: 0449243028 / isbn-13: 9780449243022
