. (2001). -. (e17848). GEOGRAPHICAL RESEARCH QUARTERLY, 40(0), e17848
. "-" .e17848 , GEOGRAPHICAL RESEARCH QUARTERLY, 40, 0, 2001, e17848.
. (2001). '-', GEOGRAPHICAL RESEARCH QUARTERLY, 40(0), e17848.
, "-," GEOGRAPHICAL RESEARCH QUARTERLY, 40 0 (2001): e17848,
. -. GEOGRAPHICAL RESEARCH QUARTERLY. 2001;40(0):e17848 (In Persian).
