TY  - BOOK
T1  - Field and laboratory activities in environmental science.
A1  - Enger, Eldon D.
A2  - Smith, Bradley F.
LA  - English
PP  - Dubuque IA, U.S.A.
PB  - Wm. C. Brown
YR  - 1995
ED  - 5th ed.
UL  - https://ds.mainlib.upd.edu.ph/Record/UP-99796217607980259
OP  - 212
CN  - GE33 E54 1995 5th ed.
SN  - 0697159094
KW  - Environment -- Experiments.
KW  - Environmental education -- Activity programs.
KW  - Environmental sciences -- Problems, exercises, etc..
ER  -