| Author | Larry Niven |
| Copyright Holder | Larry Niven |
| Cover Art by | Rick Sternbach |
| Publisher | Ballantine Books |
| Illustrator | Bonnie Dalzell |
| Publisher Series | Ballantine Science Fiction |
| Format | Paperback |
| Language | English |
| Location | New York, United States |
| Printed | 1975-12 |
| First Printing | 1966-08 |
| Copyright | 1966 |
| Pages / Font | 188 pages |
| Catalog Number | 24591 |
| SBN | 345-24591-1-150 |
| Impression/Printing No. | 5 |
| Price | US $1.50 |
| Notes | A much shorter version of "World of Ptavvs" first appeared in Worlds of Tomorrow, 1965 by Galaxy Publishing Corporation. First Canadian Printing: September, 1966 Second Canadian Printing: August, 1971 |
Added by DarkStar1951