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by E. E."Doc" SmithPaperback details (UK). details (United States). details (Germany). details (Canada). ISBN: 978-0-586-03760-7 ISBN-10: 0-586-03760-8 Grafton · 1972 |
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2007 | Paperback | Triplanetary |
1973 | Mass Market Paperback | Triplanetary |