TY  - BOOK
ED  - National Information Center for Educational Media.
TI  - Index to enviromental studies
SN  - 0893200123
PY  - 1977///
CY  - Los Angeles
PB  - National Information Center for Educational Media
KW  - Ecology
KW  - Audio
KW  - visual aids
KW  - Indexes
KW  - Environmental protection
KW  - Science
ER  -