Bhatt. N. D. (2005). Elementary Engineering Drawing: Plane and Solid Geometry (48th ed.). Charotar Book.
Παραπομπή Chicago StyleBhatt. N. D. Elementary Engineering Drawing: Plane and Solid Geometry. 48th ed. Anand: Charotar Book, 2005.
Παραπομπή MLABhatt. N. D. Elementary Engineering Drawing: Plane and Solid Geometry. 48th ed. Charotar Book, 2005.
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