Hansen, Bent Long and short-term planning in underdeveloped countries : Professor Dr. F. de Vries lectures / Bent Hansen & F. de Vries - Amsterdam : North-Holland , 1967 - xii, 61p. ; 18 cm. Includes bibliographical references and index. Subjects--Topical Terms: PlanningFinanceEconomic policy Dewey Class. No.: 338.9 / DEV-2