@book{42478,
	author = {Clarkson, Kenneth W. and Stone, Courtenay C.},
	title = {Microeconomics in action},
	publisher = {Prentice-Hall},
	year = {[1971]},
	address = {Englewood Cliffs, N.J.},
	note = {"A workbook ... designed to supplement any of the basic textbooks now in use."}
}