. (1990). -. (e14396). Journal of Environmental Studies, 15(15), e14396
. "-" .e14396 , Journal of Environmental Studies, 15, 15, 1990, e14396.
. (1990). '-', Journal of Environmental Studies, 15(15), e14396.
, "-," Journal of Environmental Studies, 15 15 (1990): e14396,
. -. JES. 1990;15(15):e14396 (In Persian).
