@book{38415,
	author = {Smith, Esther L., and Hay, William Howard,},
	title = {Mother and child},
	publisher = {Hay system publications},
	year = {[c1947]},
	address = {Mount Pocono, Pa.,},
	note = {A new edition of The Hay system of child development, by William H. Hay and Esther L. Smith.}
}