TY  - BOOK
AU  - x, x
AU  - Bernhard Grzimek
TI  - Grzimek's encyclopedia of ecology: x
SN  - x
U1  - REF574.503/GRZ 
PY  - 1976///
CY  - N.Y.
PB  - Van Nostrand
KW  - Ecology - Encyclopa - Edia
KW  - Biology
N1  - x
ER  -