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    Author(s): E.H. Clarke
    Date: 1961
    Source: PNW Old Series Research Note No. 211, p. 1-17
    Publication Series: Scientific Journal (JRNL)
    Station: Pacific Northwest Research Station
    PDF: View PDF  (220 KB)


    Prior to World War 11, the U. S. Forest Service (Region 6) adopted the policy of appraising ponderosa pine timber with a standardized set of lumber grade recovery data obtained from representative pine mills which are known to use average care in manufacturing and marketing. Such data were derived by combining the results of several mill studies made about 20 to 25 years ago.

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    Clarke, E.H. 1961. Ponderosa pine lumber recovery in north-central Washington. PNW Old Series Research Note No. 211, p. 1-17

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