Peroral bioassay of technical grade preparations of the douglas fir tussock moth nucleopolyhedrosis virus

Martignoni, M.E., Iwai, P.J.

Peroral bioassay of technical grade preparations of the douglas fir tussock moth nucleopolyhedrosis virus - Oregon 1977 - 1-12 p. - United States Department of Agriculture, Forest Service Research Paper PNW-222 .
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