Wood, Harley
Unveiling the universe : the aims and achievements of astronomy / Harley Wood
Angus and Robertson, 1967
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Morrison, David, author
Frontiers of astronomy
Saunders College, 1990
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Hartman, William K., author
Astronomy : the cosmic journey / William K. Hartman
Wadsworth, 1985
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Seeds, Michael A.
Horizons, explosing the universe / Michael A. Seeds
Wadsworth, 1981
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Wyatt, Stanley P.
Principles of astronomy / Stanley P. Wyatt
Allyn and Bacon, 1971
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