@book{16767,
	author = {Jamison, V. C. and E.U.A. Department of Agriculture.},
	title = {Soil and water research on a claypan soil; a compilation of results of research conducted et Midwest Claypan Experiment Farm...},
	publisher = {Government Printing Office,},
	year = {1968},
	series = {USDA. Agricultural Research Service. Technical Bulletin},
	address = {Washington :}
}