. (1988). -. (e14136). GEOGRAPHICAL RESEARCH QUARTERLY, 23(0), e14136
. "-" .e14136 , GEOGRAPHICAL RESEARCH QUARTERLY, 23, 0, 1988, e14136.
. (1988). '-', GEOGRAPHICAL RESEARCH QUARTERLY, 23(0), e14136.
, "-," GEOGRAPHICAL RESEARCH QUARTERLY, 23 0 (1988): e14136,
. -. GEOGRAPHICAL RESEARCH QUARTERLY. 1988;23(0):e14136 (In Persian).
