TY  - BOOK
AU  - Klinckmann,Evelyn
ED  - Biological Sciences Curriculum Study
TI  - Biology teachers' handbook
SN  - 0852260652 :
U1  - 574.0712 
PY  - 1971///
CY  - New Delhi
PB  - Wiley
KW  - Biology
KW  - Study and teaching (Secondary)
KW  - Hand book
ER  -