. (1976). -. (e14896). Journal of Environmental Studies, 5(5), e14896
. "-" .e14896 , Journal of Environmental Studies, 5, 5, 1976, e14896.
. (1976). '-', Journal of Environmental Studies, 5(5), e14896.
, "-," Journal of Environmental Studies, 5 5 (1976): e14896,
. -. JES. 1976;5(5):e14896 (In Persian).
