P-ISSN 0008-0845
E-ISSN 2160-8091
Vol. 29, Issue 4, 1975April 01, 1975 PDT 
ccby-nc-nd-4.0 
Biological control of russian thistle 
Biological control of russian thistle
R Hawkes, R Goeden, A Mayfield, D Ricker, 
Hawkes, R, R Goeden, A Mayfield, and D Ricker. 1975. “Biological Control of Russian Thistle.” California Agriculture 29 (4): 3–4.