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372.357071 SIN/E BCT8653 BCT8654 BCT11175 BCT12934
Singh, Y.K. Teaching of environmental science / Y.K. Singh. - New Delhi : A.P.H., 2016 . x,366p. : table ; 22cm. Include index 81-7648-910-7 195.00 ENVIRONMENTAL SCIENCE - TEACHING
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