. (1975). -. (e14769). Journal of Environmental Studies, 3(3), e14769
. "-" .e14769 , Journal of Environmental Studies, 3, 3, 1975, e14769.
. (1975). '-', Journal of Environmental Studies, 3(3), e14769.
, "-," Journal of Environmental Studies, 3 3 (1975): e14769,
. -. JES. 1975;3(3):e14769 (In Persian).
