. (1989). -. (e14145). GEOGRAPHICAL RESEARCH QUARTERLY, 25(0), e14145
. "-" .e14145 , GEOGRAPHICAL RESEARCH QUARTERLY, 25, 0, 1989, e14145.
. (1989). '-', GEOGRAPHICAL RESEARCH QUARTERLY, 25(0), e14145.
, "-," GEOGRAPHICAL RESEARCH QUARTERLY, 25 0 (1989): e14145,
. -. GEOGRAPHICAL RESEARCH QUARTERLY. 1989;25(0):e14145 (In Persian).
