. (1975). -. (e14588). Journal of Environmental Studies, 2(2), e14588
. "-" .e14588 , Journal of Environmental Studies, 2, 2, 1975, e14588.
. (1975). '-', Journal of Environmental Studies, 2(2), e14588.
, "-," Journal of Environmental Studies, 2 2 (1975): e14588,
. -. JES. 1975;2(2):e14588 (In Persian).
