TY  - BOOK
AU  - Shrivastava, A.K .
AU  - Ranjan R. K .
TI  - A handbok for teachers research in teaching ecology and environmental
SN  - 81-7648-941-7
U1  - 363.7 SHR 
CY  - New Delhi
N1  - Includes bibliographical reference and index
ER  -