@article { author = {unknown,}, title = {-}, journal = {Journal of Environmental Studies}, volume = {8}, number = {8}, pages = {-}, year = {1978}, publisher = {دانشگاه تهران}, issn = {1025-8620}, eissn = {2345-6922}, doi = {}, abstract = {-}, keywords = {}, title_fa = {حفاظت وبهبود محیط زیست در برنامه عمرانی ششم}, abstract_fa = {}, keywords_fa = {}, url = {https://jes.ut.ac.ir/article_14997.html}, eprint = {https://jes.ut.ac.ir/article_14997_824bfa6de6a61c42b92d599ba818e84e.pdf} }