@book{22284,
	author = {Bowler, Earl M.},
	title = {Supervisory personnel development :},
	publisher = {U.S. Dept. of Health, Education, and Welfare, Office of Education},
	year = {[1957]},
	series = {[United States Office of Education] Vocational Division. Bulletin},
	address = {[Washington]},
	note = {Bound with Vocational Division bulletin no. 267-no. 272 subsequent to publication.}
}