Jefferies, R. P. S. <br/><br/>
The ancestry of the vertebrates 
R.P.S. Jefferies 
 - London  British Museum  1986 
 - 376p. ill. 26cm 
<br/><br/><label>ISBN: </label>0565008870 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vertebrates--Evolution