Stadium and Sex Determination of Yellowheaded Spruce Sawfly Larvae, Pikonema alaskensis1 von Vanderwerker, Gerritt K., Kulman, Herbert M.

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Spruce Budworm: Techniques to Improve Counting of Eggs12 von Leonard, David E., Simmons, Gary A., Vanderwerker, Gerritt K.

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Zectran and Aquatic Insects: Comparison with Other Insecticides 1 von Dimond, John B., Malcolm, Stanley E., VanDerwerker, Gerritt K.

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Use of Regression on Egg and First Instar Samples of the Yellowheaded Spruce Sawfly, Pikonema alaskensis, on White Spruce 1 von Houseweart, Mark W., Vanderwerker, Gerritt K., Weisberg, Sanford, Kulman, H. M.

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