BHATT N D. (2005). ELEMENTARY ENGINEERING DRAWING. CHAROTAR PUB.HOUSE.
Lua i Stíl Chicago (17ú heag.)BHATT N D. ELEMENTARY ENGINEERING DRAWING. ANAND: CHAROTAR PUB.HOUSE, 2005.
Lua MLA (9ú heag.)BHATT N D. ELEMENTARY ENGINEERING DRAWING. CHAROTAR PUB.HOUSE, 2005.
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