Coats, R.N., Geyer, W.A. and Sucoff, E.I., (1968), "Synecological Light Coordinates: A Verification by Light Measurement ", Minnesota Forestry Research Notes 199, School of Forestry, University of Minnesota
Minnesota Forestry Research Notes
Published as Scientific Journal Paper Series No. 6731 of the Minnesota Agricultural Experiment Station.
Coats, Robert N.; Geyer, Wayne A.; Sucoff, Edward I..
Synecological Light Coordinates: A Verification by Light Measurement.
St. Paul, Minn. : School of Forestry, University of Minnesota.
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