Williams, Louis O <br/><br/>
The orchidaceae of mexico 
Louis O Williams ; edited by Abdul Bari Awan 
 - Dehra Dun  Bishen Singh Mahendra Pal Singh  1986 
 - 321, [22] p. 
<br/><br/> includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Orchids
<br/><br/><label>Dewey Class. No.: </label>584.150972 WIL