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    Using D.B.H. and butt log quality to estimate tree yields by saw log grade / by Hyvärinen, Matti J. (Matti Juhani)

    Published 1968
    Government Document Book
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    Cambial dieback and taphole closure in sugar maple after tapping / by Gibbs, Carter B. (Carter Bradley), 1925-

    Published 1973
    Government Document Book
  10. 10

    The relationship between sap-flow rate and sap volume in dormant sugar maples / by Gabriel, William J.

    Published 1972
    Government Document Book
  11. 11

    Collecting maple sap with unvented spouts, using aerial and ground lines / by Smith, H. Clay

    Published 1971
    Government Document Book
  12. 12

    Testing sugar maple sap for sweetness with a refractometer / by Smith, H. Clay

    Published 1971
    Government Document Book
  13. 13

    Tapping near old tapholes in sugar maple trees / by Smith, H. Clay

    Published 1971
    Government Document Book
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    Vacuum pumping doubles maple sap yield on flat land / by Morrow, Robert R.

    Published 1968
    Government Document Book
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    Sugaring time / by Lasky, Kathryn

    Published 1983
    Full Text (via Internet Archive)
    eBook
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    The sprouting potential of dormant buds on the bole of pole-size sugar maple / by Godman, Richard M.

    Published 1970
    Government Document Book
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