Vol. 17, Issue 1, 1963January 01, 1963 PDT
ccby-nc-nd-4.0
Control of pear psylla: With oils and oil-pyrethrins
Control of pear psylla: With oils and oil-pyrethrins
H Madsen, P Westigard,
Madsen, H, and P Westigard. 1963. “Control of Pear Psylla: With Oils and Oil-Pyrethrins.” California Agriculture 17 (1): 9–10.