TY  - BOOK
AU  - Pollard,E.
AU  - Yates,T.J.
AU  - 
ED  - Joint Nature Conservation Committee (Great Britain)
TI  - Monitoring butterflies for ecology and conservation: the British butterfly monitoring scheme 
SN  - 0412634600
AV  - QL555.G7 P64 1993
PY  - 1993///
CY  - London, UK
PB  - Chapman & Hall
KW  - Butterflies
KW  - Great Britain
KW  - Ecology
KW  - Monitoring
N1  - Published in association with the Institute of Terrestrial Ecology ( Natural Environmental Research Council) and the Joint Nature Conservation Committee; Includes bibliographical references ( p. [255]-265 ) and index
ER  -