Nitrogenous Compounds in the Xylem Sap of Ulmus americana: Seasonal Variations in Relation to Dutch Elm Disease Susceptibility

Author: Singh Dilbagh   Smalley Eugene B.  

Publisher: Society of American Foresters

ISSN: 0015-749X

Source: Forest Science, Vol.15, Iss.3, 1969-09, pp. : 299-304

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Abstract