%0 Journal Article %T - %J Journal of Environmental Studies %I دانشگاه تهران %Z 1025-8620 %D 1976 %\ 05/22/1976 %V 6 %N 6 %P - %! - %R %X - %U https://jes.ut.ac.ir/article_14724_0594de52a9d17e372b6e1c39a9448fac.pdf