TY  - BOOK
AU  - Singh,Y.K.
TI  - Teaching of environmental science
SN  - 8176489093
U1  - 371.102 
PY  - 2016///
CY  - New Delhi
PB  - A.P.H.Publishing
KW  - Environmental science-Teaching method
N1  - Includes bibliographical references and index
ER  -