Johnston, Marshal C. <br/><br/>
The ten species of Croton (Euphorbiaceae) occurring in far western Texas 

<br/><br/> Sobretiro de: The Southwestern Naturalist 7(1):1-22, 1962 
<br/><br/><label>LCCN: </label>17475 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crotón.