. (1975). -. (e14761). Journal of Environmental Studies, 3(3), e14761
. "-" .e14761 , Journal of Environmental Studies, 3, 3, 1975, e14761.
. (1975). '-', Journal of Environmental Studies, 3(3), e14761.
, "-," Journal of Environmental Studies, 3 3 (1975): e14761,
. -. JES. 1975;3(3):e14761 (In Persian).
