. (1991). -. (e16305). Journal of Environmental Studies, 16(16), e16305
. "-" .e16305 , Journal of Environmental Studies, 16, 16, 1991, e16305.
. (1991). '-', Journal of Environmental Studies, 16(16), e16305.
, "-," Journal of Environmental Studies, 16 16 (1991): e16305,
. -. JES. 1991;16(16):e16305 (In Persian).
