Ancient of Days
| Book | Ancient of Days |
| Cover Artist | Christopher Zacharow |
| Publisher | Tor |
| Format | Mass-Market Paperback |
| Language | English |
| Location | United States |
| First Paperback Printing | 1986-09 |
| Pages / Font | 408 pages |
| ISBN | 0812531973 |
| Library of Congress Catalog Card Number | 84-28324 |
| Price | 3.95 |
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