Essential oil yield stability of 20 populations of thyme (Thymus kotschyanus) across 11 environments of Iran Journal title: Journal of Biodiversity and Environmental Sciences (JBES) Authors: Abbas Pourmeidani, Ali Ashraf Jafari, Hasan Maddah Arefi, Sepideh Torabi, Mahdi Mirza Subject(s): Biological Sciences, Environmental Sciences, Biology