Ariyo, Ademola. Productivity of the Nigerian tax system, 1970-1990 / Ademola Ariy o. - Nairobi : African Economic Research Consortium, c1997. - 39 p. ; 25 cm. - AERC research paper ; 67 . "November, 1997." Includes bibliographical references (p. [36]-39). ISBN: 9966900349 Subjects--Topical Terms: Taxation -- Nigeria. Fiscal policy -- Nigeria. Dewey Class. No.: 336.2009669