@book{41968,
	author = {U.S. Bureau of Educational Personnel Development.},
	title = {Do teachers make a difference?},
	publisher = {U.S. Department of Health, Education, and Welfare. Office of Education, Bureau of Educational Personnel Development},
	year = {1970.},
	series = {OE-58042},
	address = {Washington},
	note = {Papers were prepared by the authors for a conference sponsored by the Bureau of Educational Personnel Development, U.S. Office of Education.}
}