Encyclopaedia of Environmental Science and Technology. Vol. 4 - S.K. Agarwal; P.R. Trivedi (New Delhi APH Publishing Corporation, 2011)
S.K. Agarwal & P.R. Trivedi: Encyclopaedia of Environmental Science and Technology. Vol. 4. New Delhi. APH Publishing Corporation, 2011. 81-313-1042-7 Rs. 6500.00--(574.503AGA)
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