TY  - BOOK
TI  - Ecology
T2  - (Understanding Science & Nature)
SN  - 0-8094-9708-5
U1  - Ref. 577 E193 1992 
PY  - 1992///
CY  - Alexandria, Virginia
PB  - Time-Life
KW  - Ecology
KW  - Environmental biology
N1  - Includes index
ER  -