O'Connor, Raymond J. Farming & birds / Raymond J. O'Connor and Michael Shrubb ; wash [i.e. with] drawings by Donald Watson. - Cambridge [Cambridgeshire] ; New York : Cambridge University Press, 1986. - xi, 290 p. : ill., maps ; 25 cm. Includes index. Bibliography: p. [264]-274. ISBN: 0521324475 LCCN: 86002279 Subjects--Topical Terms: Bird populations.Birds--Habitat.Birds--Conservation.Agricultural ecology. LC Class. No.: QL677.4 / .O26 1986 Dewey Class. No.: 598.25264 / OCF 1986