TY  - BOOK
AU  - Clapham, A. R. 
TI  - The IBP Survey of Conservation Sites ; An Experimental Study 
SN  - 052122697x
U1  - 577.0723 CLA 
PY  - 1980///
CY  - London 
PB  - Cambridge University 
KW  - Ecological Surveys
ER  -