Long-term climate trends and agricultural productivity in Southwestern Michigan. Crum, J., Robertson, G., & Nurenberger, F. In Climate Variability and Ecosystem Response, volume 65. U.S. Forest Service, U.S. Department of Agriculture, Washington, D.C., 1990.
bibtex   
@incollection{crum_long-term_1990,
	address = {Washington, D.C.},
	title = {Long-term climate trends and agricultural productivity in {Southwestern} {Michigan}},
	volume = {65},
	booktitle = {Climate {Variability} and {Ecosystem} {Response}},
	publisher = {U.S. Forest Service, U.S. Department of Agriculture},
	author = {Crum, J.R. and Robertson, G.P. and Nurenberger, F.},
	editor = {Swith, L.W.},
	year = {1990},
	keywords = {KBS}
}

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