Papi Ugo Ed. Ecconomic problems of agriculture in industrial societies Proceeding of a conference held by the international economic assocation at rome Papi Ugo Ed.; Nunn Charles Ed. - London Macmillan Press 1969 - xxix,671p cm. Standard No.: 34994 Source: Textual Dewey Class. No.: X9(J)p1,N65, K9