Hood, G. J. (1946). Geometry of engineering drawing: Descriptive geometry by the direct method (3rd.). New York: McGraw-Hill.
Παραπομπή Chicago StyleHood, George J. Geometry of Engineering Drawing: Descriptive Geometry By the Direct Method. 3rd. New York: McGraw-Hill, 1946.
Παραπομπή MLAHood, George J. Geometry of Engineering Drawing: Descriptive Geometry By the Direct Method. 3rd. New York: McGraw-Hill, 1946.
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