Grayis new manual of botany :   a handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada  / 
by Benjamin Lincoln Robinson and Merritt Lyndon Fernald 
 - 7 
 - New York :   American Book 
 - 926 p. 
<br/><br/><label>LCCN: </label>204320 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botánica -- Manuales de laboratorio <br/>Floricultura -- América <br/>Helechos
<br/><br/><label>Dewey Class. No.: </label>PA-C 581.0202  G7