Extinction is forever :   threatened and endangered species of plants in the Americas and their significance in ecosystems today and in the future : proceedings of a symposium held at the New York Botanical Garden, May 11-13, 1976, in commemoration of the Bicentennial of the United States of America /  
edited by Ghillean T. Prance and Thomas S. Elias. 
 - Bronx, New York :   New York Botanical Garden,   c1977. 
 - vi, 437 p. :   il., mapas. 
<br/><br/>"Endangered plant species of the world and their endangered habitats: a selected bibliography, compiled by C. R. Long and M. A. Miasek": p. 389-395. 
<br/><br/><label>ISBN: </label>0893271969 
<br/><br/><label>LCCN: </label>77000302  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plantas--Conservação--Congressos.<br/>Plantas--Extinção--Congressos.<br/>Plantas raras--Congressos.
<br/><br/><label>Dewey Class. No.: </label>333.95