@book{19502,
	author = {Belfield, W.},
	title = {Models and methods in practical biology for secondary schools /},
	publisher = {Pergamon Press,},
	year = {1966.},
	series = {The Commonwealth and international library of science, technology, engineering, and liberal studies. Biology division},
	address = {Oxford ;},
	edition = {1st ed.},
	note = {Includes index.}
}