@book{15469,
	author = {Wasserman, Paul ed.},
	title = {Learning independently : directory of self instruction resources, programmed learning products, audio and video cassettes, multi-media kits, and conventional learning materials such as books intended for non-formal education},
	publisher = {Gale Research Co.},
	year = {1982},
	address = {DetroitUS},
	edition = {2 ed.}
}