@book{38118,
	author = {Keller, Heinrich, and Müller, William.},
	title = {Wie ernähren wir uns billig und gesund?},
	publisher = {Wegweiserverlag,},
	year = {1941.},
	address = {Zürich,},
	note = {At head of title: Dr. med. Heinrich Keller und William Müller.}
}