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検索結果 4 件

A pilot experiment of forest fertilization during an outbreak of the western spruce budworm in northeastern Oregon [microform] / R.R. Mason ... [et al.] (Research paper ; PNW-RP-506)

A pilot experiment of forest fertilization during an outbreak of the western spruce budworm in northeastern Oregon [microform] / R.R. Mason ... [et al.] (Research paper ; PNW-RP-506)
マイクロ図書
1998<YCA-A 13.78:PNW-RP-506>
国立国会図書館
  • 著者標目Mason, Richard R Pacific Northwest Research St...

Recurrent outbreak of the Douglas-fir tussock moth in the Malheur National Forest [microform] : a case history / R.R. Mason ... [et al.] (General technical report ; PNW-GTR-402)

Recurrent outbreak of the Douglas-fir tussock moth in the Malheur National Forest [microform] : a case history / R.R. Mason ... [et al.] (General technical report ; PNW-GTR-402)
マイクロ図書
1998<YCA-A 13.88:PNW-GTR-402>
国立国会図書館
  • 著者標目Mason, Richard R Pacific Northwest Research St...

Forecasting outbreaks of the Douglas-fir tussock moth from lower crown cocoon samples microform / R.R. Mason, D.W. Scott, and H.G. Paul (Research paper PNW ; RP-460)

Forecasting outbreaks of the Douglas-fir tussock moth from lower crown cocoon samples microform / R.R. Mason, D.W. Scott, and H.G. Paul (Research paper PNW ; RP-460)
マイクロ図書
1993<YCA-A 13.78:PNW-RP-460>
国立国会図書館
  • 著者標目Mason, Richard R Scott, D. W Paul, H. Gene Pac...

How to predict population trends / Richard R. Mason and T.R. Torgersen (Douglas-fir tussock moth handbook) (Agriculture handbook ; no. 610)

How to predict population trends / Richard R. Mason and T.R. Torgersen (Douglas-fir tussock moth handbook) (Agriculture handbook ; no. 610)
マイクロ図書
1983<YCA-A 1.76:610>
国立国会図書館
  • 著者標目Mason, Richard R Torgersen, T. R Combined Fore...

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