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1
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2by Wollam, John D.Subjects: “...Gypsy moth Biological control Pennsylvania....”
Published 1976
Government Document Book -
3
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4by Willcox, HenerySubjects: “...Gypsy moth Biological control Pennsylvania....”
Published 1977
Government Document Book -
5Published 1994Subjects: “...Gypsy moth Environmental aspects Pennsylvania....”
Government Document Microform Book -
6by Gansner, David A.Subjects: “...Gypsy moth Pennsylvania....”
Published 1979
Government Document Book -
7by Barger, Jack H.Subjects: “...Gypsy moth Control Pennsylvania....”
Published 1975
Government Document Book -
8
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9by Gansner, David A.Subjects: “...Gypsy moth Environmental aspects Pennsylvania....”
Published 1994
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