@book{137859,
	author = {Perris, N. M.},
	title = {Burden trends in modern management /},
	publisher = {American management association,},
	year = {c1937.},
	series = {[American management association] Production series:},
	address = {New York, N.Y.:},
	note = {"Presented at the A.M.A. Production conference ... Cleveland, June 9, 1930"--P. 2.}
}