Dhawan, R. K. (1997). A Textbook of engineering drawing: Geometrical drawing. S. Chand.
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Dyfyniad Arddull Chicago
Dhawan, R. K. A Textbook of Engineering Drawing: Geometrical Drawing. New Delhi: S. Chand, 1997.
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Dyfyniad MLA
Dhawan, R. K. A Textbook of Engineering Drawing: Geometrical Drawing. S. Chand, 1997.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.