. (1992). -. (e14161). GEOGRAPHICAL RESEARCH QUARTERLY, 30(0), e14161
. "-" .e14161 , GEOGRAPHICAL RESEARCH QUARTERLY, 30, 0, 1992, e14161.
. (1992). '-', GEOGRAPHICAL RESEARCH QUARTERLY, 30(0), e14161.
, "-," GEOGRAPHICAL RESEARCH QUARTERLY, 30 0 (1992): e14161,
. -. GEOGRAPHICAL RESEARCH QUARTERLY. 1992;30(0):e14161 (In Persian).
