TY  - BOOK
AU  - Lack, David.
AU  - Gillmor, Robert.
TI  - Population studies of birds
U1  - 598.07232 
PY  - 1966///
CY  - Oxford
PB  - Clarendon
KW  - Zoology
KW  - Bird populations 	
KW  - Birds 	
KW  - Europe
ER  -