TY  - BOOK
AU  - Pollard,E.
AU  - Yates,T.J.
ED  - Institute of Terrestrial Ecology.
ED  - Joint Nature Conservation Committee (Great Britain)
TI  - Minitoring butterflies for ecology and conservation: the British butterfly monitoring scheme 
SN  - 0412402203 (acidfree paper)
AV  - QL555.G7 P64 1993
PY  - 1993///
CY  - London , UK
PB  - Chapman & Hall
KW  - Butterflies
KW  - Great Britain
KW  - Ecology
KW  - Monitoring
KW  - Great Britatn
KW  - Woldlife conservation
N1  - Includes bibliographical references (p. [255]-265) and index
ER  -