TY  - BOOK
AU  - Spellerberg,Ian F., Hardes, Steve.
AU  - x
TI  - Biological conservation: x
SN  - 0521397863
U1  - 639.9/S743b 
PY  - 1989///
CY  - Cambridge ; New York
PB  - Cambridge Univ. Press
KW  - Wild life - Conservation
N1  - Includes
ER  -