Johnston, Bruce F. The role of agriculture in economic development - (s.l. : s.e), (s.a.) - 25 p Sobretiro de : Américan Economic Review 51(4): 566-593, 1961 LCCN: 17461 Subjects--Topical Terms: Agricultura--Aspectos económicos. Dewey Class. No.: 338.1 / J6