TY  - BOOK
AU  - Singh, Y.K.
TI  - Teaching of environmental science
SN  - 81-7648-910-7
U1  - 372.357071 
PY  - 2016///
CY  - New Delhi
PB  - A.P.H.
KW  - ENVIRONMENTAL SCIENCE
KW  - TEACHING
N1  - Include index
ER  -