. (1993). -. (e17214). GEOGRAPHICAL RESEARCH QUARTERLY, 32(0), e17214
. "-" .e17214 , GEOGRAPHICAL RESEARCH QUARTERLY, 32, 0, 1993, e17214.
. (1993). '-', GEOGRAPHICAL RESEARCH QUARTERLY, 32(0), e17214.
, "-," GEOGRAPHICAL RESEARCH QUARTERLY, 32 0 (1993): e17214,
. -. GEOGRAPHICAL RESEARCH QUARTERLY. 1993;32(0):e17214 (In Persian).
