TY  - BOOK
T1  - Exemplary programs in physics, chemistry, biology, and earth science
A2  - Yager, Robert E. 1930-
LA  - English
PP  - Washington
PB  - National Science Teachers Association
YR  - 1983
UL  - https://tuklas.up.edu.ph/Record/UP-99796217603766113
OP  - 85
CN  - Q 181 E89 1983
KW  - Science : Study and teaching (Elementary) : United States.
KW  - Biology : Study and teaching (Elementary) : United States.
KW  - Chemistry : Study and teaching (Elementary) : United States.
KW  - Earth science : Study and teaching (Elementary) : United States.
KW  - Physics : Study and teaching (Elementary) : United States.
ER  -