Gill,S P. (2010). A text book of engineering drawing: :geometrical drawing (Ed.11.). S K Kataria.
Dyfyniad Arddull ChicagoGill,S P. A Text Book of Engineering Drawing: :geometrical Drawing. Ed.11. New Delhi: S K Kataria, 2010.
Dyfyniad MLAGill,S P. A Text Book of Engineering Drawing: :geometrical Drawing. Ed.11. S K Kataria, 2010.
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