OBERG, J. E., & OBERG, A. R. (1986). Pioneering space: Living on the next frontier. McGraw-hill.
Chicago Style (17th ed.) CitationOBERG, James E., and Alcestis R. OBERG. Pioneering Space: Living on the Next Frontier. New York: McGraw-hill, 1986.
MLA (9th ed.) CitationOBERG, James E., and Alcestis R. OBERG. Pioneering Space: Living on the Next Frontier. McGraw-hill, 1986.
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