@book{20938,
	author = {Donnan, William W. and Bradshav, George B.},
	title = {Report on drainage investigation in irrigated areas of Imperial Valley, Calif.., 1941-51; a to 10-year summary},
	publisher = {U.S. Department of Agriculture Soil Conservation Sevice,},
	year = {1954},
	series = {Bulletin SCS-TP-120},
	address = {Washington :}
}