Wilkinson, Richard G. Poverty and progress an ecological perspective on economic development [by] Richard G. Wilkinson. Introd. by Kenneth E. Boulding. - New York Praeger [1973] - xxi, 225 p. 21 cm. Includes bibliographical references. LCCN: 73006768 Subjects--Topical Terms: Economic developmentEconomic history LC Class. No.: HC59 / .W4795 Dewey Class. No.: 330.9