TY  - BOOK
AU  - M. B Usher
TI  - Biological Management and conservation
SN  - 412-11330-9
U1  - 574.5 
PY  - 1973///
CY  - London
PB  - Chapman and hall
N1  - M. B Usher: Biological Management and conservation.  London.  Chapman and hall, 1973. 412-11330-9--(574.5USH)
ER  -