el tigi, a. e. d. (1964). determining investment priority ratings. the institute of national planning.
Chicago-Zitierstil (17. Ausg.)el tigi, aziz el din. Determining Investment Priority Ratings. cairo: the institute of national planning, 1964.
MLA-Zitierstil (9. Ausg.)el tigi, aziz el din. Determining Investment Priority Ratings. the institute of national planning, 1964.