Letwin, William Law and economic policy in America : the evolution of the sherman antitrust act / William Letwin - chicago : University of chicago press, c1965. - xii, 304 p. ; 21 cm. ISBN: 0226473538 LCCN: Subjects--Topical Terms: Economic policyAmericaLaw LC Class. No.: KF1649 / .L4 1965 Dewey Class. No.: 343.73072 / L651l