. (1977). -. (e14924). Journal of Environmental Studies, 7(7), e14924
. "-" .e14924 , Journal of Environmental Studies, 7, 7, 1977, e14924.
. (1977). '-', Journal of Environmental Studies, 7(7), e14924.
, "-," Journal of Environmental Studies, 7 7 (1977): e14924,
. -. JES. 1977;7(7):e14924 (In Persian).
