Nayar, K.R. .
Ecology and health : a system approach / by K.R. Nayar. - New Delhi : A.P.H. Publishing Corporation , 1998 - viii, 210p :
81-7648-019-3
Life science
G:5 / N8;1
Ecology and health : a system approach / by K.R. Nayar. - New Delhi : A.P.H. Publishing Corporation , 1998 - viii, 210p :
81-7648-019-3
Life science
G:5 / N8;1