@book{23754,
	author = {Haugh-Jones, E M (Ed.)},
	title = {Economics and technical change},
	publisher = {Basil Balckwell},
	year = {1969},
	address = {Oxford},
	note = {Papers presented to section F (Economcis)and jontly to sections F and G (Engineering)at the 1968 annual meeting of the British association for the advancement of science}
}