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Enter the following information to request a copy for the following item: Investigations with the systemic insecticides phorate, O, O-diethyl S-(ethylthio) methyl phosphorodithioate, and Di-Syston, O, O-diethyl S-2-(ethylthio) ethyl phosphorodithioate, for the control of birth leaf miner, Fenusa pusilla (Lepeletier), and eastern spruce gall aphid, Chermes abietis Linnaeus.
Requesting the following file: investigationswi00davi.pdf