Warbler - British Trust for Ornithology
Warbler - British Trust for Ornithology
Warbler - British Trust for Ornithology
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IDENTIFICATION FOR RINGERS 1<br />
(B.T.O. Field Guide No. 7)<br />
by K. Williamson, F.R.S.B.<br />
First Edition August 1960<br />
Set'ond Edition March 1963<br />
Third Edition April 1968<br />
Reprinted June 1974<br />
Reprinted October 1976<br />
Reprinted May 1983<br />
Covn Design by ROBOT GILLMOR<br />
Frontispiece drawing by D. I. M. WALLACB