List of Articles مقررات زیستمحیطی Open Access Article Abstract Page Full-Text 1 - 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 2 - The Impact of Environmental Regulations on Industry Competitiveness: Evidence from Manufacturing Industries of USA, U.K & Canada somaye azami mojtaba almasi afsaneh golmohammadi