Youngken, Heber Wilkinson  1913 <br/><br/>
Tratado de farmacognosia 

 - México D. F. :   Atlante,   1951. 
 - xx, 1375 p. :   figs. ;   18 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>FARMACOGNOSIA