4Mats Hannerz. Curt Almqvist and Inger Ekberg. Rooting success of cutting from young Picea abies in transition to flowering competent phase [J] . Scand J For Res, 1999,14: 498-504. 被引量:1
5Joanna F Dames ,C .J.Straker ,Mary C .Schole.Ecological and anatomical character of some Pinus patula ectomycorrhizas from Mpumalanga.South Africa .Mycorrhiza,1999,9:9-24. 被引量:1