Robson, Guy Coburn  1888- <br/><br/>
The variation of animals in nature/ 
by G.C. Robson and O.W. Richards with 2 coloured plates and 30 illustrations in the text 
 - London:  Longmans, Green,  1936 
 - xvi, 425p.:  col. front., illus. (incl. maps) col. pl. diagrs.;  23cm 
<br/><br/>Includes bibliographical references and indexes 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals--Variation<br/>Evolution (Biology)<br/>Natural selection