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2
-
Extraterrestrials--where are they? / edited by Ben Zuckerman and Michael H. Hart.
- 576.839 E9698 1995
- Cambridge University Press, University Press,
- Cambridge : Cambridge :
-
A skywatcher's Year / Jeff Kanipe.
- 520 K1645
- Kanipe, Jeff, 1953-
- Cambridge University Press, University Press,
- Cambridge : Cambridge :