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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Farkas, Martha Judit, - Surgeoner, Gordon A.
    Publication info: [Ontario], Ministry of the Environment, 1990
    Holding Institution: Ontario Ministry of the Environment
    Subjects: Aquatic ecology  Baculoviruses  Biological control  Insect pests  Microbiology  Ontario  Water