Libri di spruce budworm
4 libri in questo genere

Effectiveness of three insecticides applied at two droplet sizes for control of the Douglas-fir tussock moth and western spruce budworm
George P. Markin
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Estimating defoliation caused by spruce budworm from undamaged shoots
Tom T. Terrell
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Sexing spruce budworm pupae
Daniel T. Jennings
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Rearing the western spruce budworm
Jacqueline L. Robertson
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