. (1976). -. (e14893). Journal of Environmental Studies, 5(5), e14893
. "-" .e14893 , Journal of Environmental Studies, 5, 5, 1976, e14893.
. (1976). '-', Journal of Environmental Studies, 5(5), e14893.
, "-," Journal of Environmental Studies, 5 5 (1976): e14893,
. -. JES. 1976;5(5):e14893 (In Persian).
