Thomson, A. Landsborough,  Sir,  1890- <br/><br/>
Problems of bird-migration / 
by A. Landsborough Thomson. 
 - [London] :  H.F. & G. Witherby,  1926 
 - 3 p. l., ix-xv, 350 p. :  ill. (maps) diagrs. ;  23 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birds--Migration
<br/><br/><label>Dewey Class. No.: </label>598.252