NIMKAR SURESH L. (2001). ENVIRONMENTAL STUDIES: F Y B COM (3RD.). RELLABLE PUBLISHING HOUSE.
Lua i Stíl Chicago (17ú heag.)NIMKAR SURESH L. ENVIRONMENTAL STUDIES: F Y B COM. 3RD. NEW DELHI: RELLABLE PUBLISHING HOUSE, 2001.
Lua MLA (9ú heag.)NIMKAR SURESH L. ENVIRONMENTAL STUDIES: F Y B COM. 3RD. RELLABLE PUBLISHING HOUSE, 2001.
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