@book{9650,
	author = {Ralston, Oliver.},
	title = {Electrostatic separation of mixed granular solids /},
	publisher = {Elsevier Pub. Co., },
	year = {1961.},
	series = {Elsevier monographs, Engineering Section,},
	address = {Amsterdam ; New York : },
	note = {Includes index.}
}