. (1992). -. (e17215). GEOGRAPHICAL RESEARCH QUARTERLY, 31(0), e17215
. "-" .e17215 , GEOGRAPHICAL RESEARCH QUARTERLY, 31, 0, 1992, e17215.
. (1992). '-', GEOGRAPHICAL RESEARCH QUARTERLY, 31(0), e17215.
, "-," GEOGRAPHICAL RESEARCH QUARTERLY, 31 0 (1992): e17215,
. -. GEOGRAPHICAL RESEARCH QUARTERLY. 1992;31(0):e17215 (In Persian).
