Sampling the Western Spruce Budworm: Fourth Instars, Pupae, and Egg Masses

Author： Srivastava Nilima   Campbell Robert W.   Torgersen Torolf R.   Beckwith Roy C.  

Publisher： Society of American Foresters

ISSN： 0015-749X

Source： Forest Science, Vol.30, Iss.4, 1984-12, pp. : 883-892

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