Rich, Pat Wickers. <br/><br/>
New world vultures' with old world affinities? :  a review of fossil and recent gypaetinae of both the old and the new world 
Pat Vickers Rich. 
 - Basel :  S. Karger,  1980. 
 - 115 pages ;  22 cm. 
 - Contributions to vertebrate evolution  5 .
<br/><br/>Bibliography: p. 113-115 
<br/><br/><label>ISBN: </label>380550280X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vultures--Evolution.<br/>Birds of prey--Evolution.<br/>Vultures--Anatomy.<br/>Birds of prey--Anatomy.<br/>Birds--Evolution.<br/>Birds--Anatomy<br/>Birds, Fossil.