Olson, Mancur. The logic of collective action; public goods and the theory of groups [by] Mancur Olson, Jr. - Cambridge, Mass., Harvard University Press, 1965. - x, 176 p. 22 cm. - Harvard economic studies, v. 124 . Bibliographical footnotes. LCCN: 65019826 Subjects--Topical Terms: Social groups.Social interaction. LC Class. No.: HM131 / .O55 Dewey Class. No.: 302.3 / OLL 1965