@book{19975,
	author = {Ritchie, John W. and Day, Chapin Walker.},
	title = {Biology and human affairs /},
	publisher = {World book,},
	year = {c1941.},
	address = {Yonkers-on-Hudson, N.Y. :},
	note = {At head of title: By John W. Ritchie.}
}