Shreve, Forrest. <br/><br/>
Vegetation of Arizona 

<br/><br/> Sobretiro de: Flowering plants and ferns of Arizona USDA, Micellaneous Publication 423:10-23, 1942 
<br/><br/><label>LCCN: </label>56271 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botánica--Arizona.