Fitter, Richard Sidney Richmond. Collins guide to bird watching / by R. S. R. Fitter ; with 49 line drawings by R. A. Richardson. - London : Collins, 1963. - 254 p. : ill. ; 21 cm. Includes index. ISBN: 10.00 Subjects--Topical Terms: Birds.Bird watching--Great Britain. Dewey Class. No.: 598.15