@book{51519,
	author = {Toussoun, T. A. and Bega, Robert V.},
	title = {Root diseases and soil-borne pathogens; second International Symposium on Factors Determining the Behavior of Plant Pathogens in Soil},
	publisher = {Univ. of California,},
	year = {1970},
	address = {Berkeley :}
}