TY  - BOOK
AU  - Perrins,Christopher M.
AU  - Birkhead,T.R.
TI  - Avian ecology
SN  - 0216914787
PY  - 1983///
CY  - Glasgow
PB  - Blackie
KW  - Birds
KW  - Ecology
N1  - Includes bibliographical references and indexes
ER  -