Ratliff, Raymond D. <br/><br/>
More California-Poppy in Stubble Field Than in Old Field. 

 -  1972. 
 - s. 4 :  il. , tab. ;  27 cm. 
 -  No. PSW-271 .
 - Research Note. Pacific Southwest Forest and Range Experiment Station  No. PSW-271 .
<br/><br/>bibliogr. 
 = Res. Note Pac. Southw. For. Range Exper. St. N.