A field guide to the birds of Britain and Europe / by Roger Peterson, Guy Mountfort, P.A.D. Hollom ; introd. by Sir Julian Huxley. - Rev. a. enlarged ed. / in collab. with I.J. Ferguson-Lees a. D.I.M. Wallace. - London : Collins, [1969]. - xxxiii, 344 p. : ill. + [34] inset l. ill. ; 19 cm.см.. - Bibliogr.: pp. 327-330[MFN: 32336]