Vol. 35, Issue 9, 1981September 01, 1981 PDT
ccby-nc-nd-4.0
Problems with chemical control of pear psylla
Problems with chemical control of pear psylla
H Riedl, P Westigard, R Bethell, J DeTar,
Riedl, H, P Westigard, R Bethell, and J DeTar. 1981. “Problems with Chemical Control of Pear Psylla.” California Agriculture 35 (9): 7–9.