Sorption isotherms of tobacco (Nicotiana tabacum L.) seeds Lazar Lazarov, Nesho Toshkov, Tanya Ivanova, Venelina Popova and Nikolay Menkov E3S Web Conf., 207 (2020) 01018 Published online: 18 November 2020 DOI: 10.1051/e3sconf/202020701018