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Pine spittlebug : its ecology and management / Louis F. Wilson (Agriculture handbook ; 695)

Pine spittlebug : its ecology and management / Louis F. Wilson (Agriculture handbook ; 695)
Microform図書
1991<YCA-A 1.76:695>
National Diet Library
  • Subject HeadingPine -- Diseases and pests -- Pennsylvania Cercopidae Forest management ...

White pine blister rust / by W.A. McCubbin. (Bulletin) (General bulletin)

White pine blister rust / by W.A. McCubbin. (Bulletin) (General bulletin)
Paper図書
Pennsylvania Dept. of Agriculture1926.<特1-0645>
National Diet Library
  • Subject HeadingWhite pine -- Diseases and pests -- Pennsylvania. Blister rust -- Pennsylvania...

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