ebrahim, m. k. s. (1970). problems and policies for the world markets of primay commodities: The case of tobacco. the institute of national planning.
Chicago-viite (17. p.)ebrahim, m. k. s. Problems and Policies for the World Markets of Primay Commodities: The Case of Tobacco. cairo: the institute of national planning, 1970.
MLA-viite (9. p.)ebrahim, m. k. s. Problems and Policies for the World Markets of Primay Commodities: The Case of Tobacco. the institute of national planning, 1970.