Levens, A. S., & Eggers, H. C. T. (1941). Descriptive geometry. Harper.
Chicago Style (17th ed.) CitationLevens, A. S., and H. C. T. Eggers. Descriptive Geometry. New York: Harper, 1941.
MLA (9th ed.) CitationLevens, A. S., and H. C. T. Eggers. Descriptive Geometry. Harper, 1941.
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