Mycorrhiza formation of scots pine seedlings on peaty and mineral soil Lehto, T. Physiological and genetical aspects of mycorrhizae = Aspects physiologiques et genetiques des mycorhizes proceedings of the 1st European Symposium on Mycorrhizae Dijon 1-5 July 1985: 760 1986 https://eurekamag.com/research/016/436/016436478.php