@book {2284,
	title = {On the origins of language; an introduction to the evolution of human speech},
	year = {1975},
	note = {illus. 24 cm},
	pages = {viii, 196 p},
	publisher = {Macmillan},
	organization = {Macmillan},
	address = {New York},
	keywords = {Australopithecus africanus, hominids, Language and languages, larynx, pharynx, supralaryngeal vocal tract},
	isbn = {0023706902},
	author = {Lieberman, Philip}
}
