lohr, v. (1974). problems of determining the role of agriculture in the development of national economy and society. the institute of national planning.
Cytowanie według stylu Chicago (wyd. 17)lohr, v. Problems of Determining the Role of Agriculture in the Development of National Economy and Society. cairo: the institute of national planning, 1974.
Cytowanie według stylu MLA (wyd. 9)lohr, v. Problems of Determining the Role of Agriculture in the Development of National Economy and Society. the institute of national planning, 1974.