@book{20653,
	author = {Lewis, Virginia. and Ohio Public Health Association.},
	title = {Course of study in hygiene.},
	publisher = {The F.J. Heer printing co.,},
	year = {1921.},
	address = {Columbus, O.,},
	note = {On cover: Prepared by the Ohio public health association.  Pub. by the State department of education.}
}