. (1990). -. (e14392). Journal of Environmental Studies, 15(15), e14392
. "-" .e14392 , Journal of Environmental Studies, 15, 15, 1990, e14392.
. (1990). '-', Journal of Environmental Studies, 15(15), e14392.
, "-," Journal of Environmental Studies, 15 15 (1990): e14392,
. -. JES. 1990;15(15):e14392 (In Persian).
