Long-Term Management Effects on Soil Productivity and Crop Yield in Semi-Arid Regions of Eastern Oregon. Rasmussen, P., Collins, H., & Smiley, R. USDA-Agricultural Research Service and Agricultural Experiment Station, Oregon State University Station Bulletin 675, Pendleton, Oregon, 1989.
bibtex   
@book{rasmussen_long-term_1989,
	address = {Pendleton, Oregon},
	title = {Long-{Term} {Management} {Effects} on {Soil} {Productivity} and {Crop} {Yield} in {Semi}-{Arid} {Regions} of {Eastern} {Oregon}},
	publisher = {USDA-Agricultural Research Service and Agricultural Experiment Station, Oregon State University Station Bulletin 675},
	author = {Rasmussen, PE and Collins, H.P. and Smiley, R.W.},
	year = {1989},
	keywords = {KBS}
}

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