Estimated Fraser Fir Mortality and Balsom Woolly Aphid Infestation Grend Using Aerial Color Photography

Author： Aldrich R. C.   Drooz A. T.  

Publisher： Society of American Foresters

ISSN： 0015-749X

Source： Forest Science, Vol.13, Iss.3, 1967-09, pp. : 300-312

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