Tyagi, O., & Mehra, M. (1990). Textbook of environmental chemistry. Anmol Publications.
Čikaški stil citiranjaTyagi, O.D, i M. Mehra. Textbook of Environmental Chemistry. New Delhi: Anmol Publications, 1990.
MLA način citiranjaTyagi, O.D, i M. Mehra. Textbook of Environmental Chemistry. Anmol Publications, 1990.
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