Timing of Trunk-Implanted Acephate for Protection of Douglas-Fir from Defoliation by the Western Spruce Budworm

Author： Koerber Thomas W.   Sandquist Roger E.  

Publisher： Society of American Foresters

ISSN： 0885-6095

Source： Western Journal of Applied Forestry, Vol.3, Iss.4, 1988-10, pp. : 126-128

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