VENUGOPAL, K. (2010). TEXTBOOK OF ENGINEERING GRAPHICS (1ST ED.). NEW AGE INTERNATIONAL.
Chicagoスタイル(17版)引用形式VENUGOPAL, K. TEXTBOOK OF ENGINEERING GRAPHICS. 1ST ED. NEW DELHI: NEW AGE INTERNATIONAL, 2010.
MLA(9版)引用形式VENUGOPAL, K. TEXTBOOK OF ENGINEERING GRAPHICS. 1ST ED. NEW AGE INTERNATIONAL, 2010.
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