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robert h swanson
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An instrument for detecting sap movement in woody plants
Robert H. Swanson · Rocky Mountain Forest and Range Experiment Station
16 sayfa · 1962
Sap / Woody plants
A low-cost instrument to measure temperature or resistance accurately
Robert H. Swanson · Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
Sayfa sayısı yok · 1967
Electric resistance / Wheatstone bridge / Measurement
Instrument for Detecting Sap Movement in Woody Plants; No. 68
Robert H. Swanson, Rocky Mountain Forest and Range Exper · Creative Media Partners, LLC
Sayfa sayısı yok · 2021
Kategori yok
Natural and cultural stratigraphy in the Birch Creek Valley of Eastern Idaho
Swanson, Earl H. Jr, B. Robert Butler, Robson Bonnichsen · Yayınevi bilinmiyor
120 sayfa · 1964
Indians of North America / Antiquities