. (1975). -. (e14766). Journal of Environmental Studies, 3(3), e14766
. "-" .e14766 , Journal of Environmental Studies, 3, 3, 1975, e14766.
. (1975). '-', Journal of Environmental Studies, 3(3), e14766.
, "-," Journal of Environmental Studies, 3 3 (1975): e14766,
. -. JES. 1975;3(3):e14766 (In Persian).
