lohr, v. (1974). problems of determining the role of agriculture in the development of national economy and society. the institute of national planning.

lohr, v. Problems of Determining the Role of Agriculture in the Development of National Economy and Society. cairo: the institute of national planning, 1974.

lohr, v. Problems of Determining the Role of Agriculture in the Development of National Economy and Society. the institute of national planning, 1974.