Mashelkar,R. (2003). Wealth of India: Dictionary of Indian raw materials and industrial products: Vol 4.
Lua i Stíl Chicago (17ú heag.)Mashelkar,R. Wealth of India: Dictionary of Indian Raw Materials and Industrial Products: Vol 4. New Delhi, 2003.
Lua MLA (9ú heag.)Mashelkar,R. Wealth of India: Dictionary of Indian Raw Materials and Industrial Products: Vol 4. 2003.
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