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, N.Y.  New York Botanical Garden  [c1977] 
 - vi, 437 p.  ill.  28 cm. 
<br/><br/> 920319 
<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 //r873 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rare plants--Congresses.<br/>Plants--Extinction--Congresses.<br/>Plant conservation--Congresses.
<br/><br/><label>LC Class. No.: </label>QK86.A1  / E94 
<br/><br/><label>Dewey Class. No.: </label>333.9/5