List of Articles Environmental Economic Open Access Article Abstract Page Full-Text 1 - The Policies of Learning Economy to Achieve Sustainable Development Mohammad Mohammadi Ashnani Tahereh Miremadi Afshin Danekar Majid Makhdoom Farkhonde Vahid Majed 10.22034/jest.2018.12392.2096 Open Access Article Abstract Page Full-Text 2 - Nonlinear affect in Competitiveness and Firm Innovation by Environmental Policy Stringency; testing the Porter's Hypothesis omidali adeli yazdan goudarzi ali akbar ebrahiminejad 10.22034/jest.2021.50262.4965 Open Access Article Abstract Page Full-Text 3 - Economic Valuation of Market Oriented Outputs for Environmental Sources in Arjan-Parishan Lake (With in Emphasis Aquatic Species) Majid Abbasspour Zahra Abedi Majid Ahmadian Farzaneh Zafari Open Access Article Abstract Page Full-Text 4 - The Effect of Environmental Performance on Happiness: A Cross-country Analysis hadis hesabi morteza khorsandi hosein abbasinejad Hassan Dehghan Shourkand