MANDRE, M; OTS, K. Influence of industrial air pollutants on growth and physiological state of Douglas fir (Pseudotsuga menziesii) in Estonia. The Indian Journal of Agricultural Sciences, Delhi, India, v. 72, n. 5, 2014. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/40813. Acesso em: 26 oct. 2025.