Association of Mycoplasma ovipneumoniae Infection with Population-Limiting Respiratory Disease in Free-Ranging Rocky Mountain Bighorn Sheep (Ovis canadensis canadensis) von Besser, Thomas E, Cassirer, E. Frances, Potter, Kathleen A, VanderSchalie, John, Fischer, Allison, Knowles, Donald P, Herndon, David R, Rurangirwa, Fred R, Weiser, Glen C, Srikumaran, Subramaniam

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Ecological risk assessment: A scientific perspective von Gentile, John H., Harwell, Mark A., van der Schalie, William H., Norton, Susan B., Rodier, Donald J.

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Equine viral arteritis alert — Status in the northwest, 1989 von Vander Schalie, John, Evermann, Jim

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The effects of lapsed time since feeding upon the toxicity of zinc to fish von Cairns, Jr, J, van der Schalie, W H, Westlake, G F

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Effects of Intermittent Chlorination on Aquatic Organisms and Communities von Dickson, Kenneth L., Cairns, John, Gregg, Benjamin C., Messenger, David I., Plafkin, James L., van der Schalie, William H.

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