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Effect of White Birch Disk Characteristics on Drying Check Behaviors THE STUDY ON AGROBACTERIUM TUMIFACIENS-MEDIATED TRANSFORMATION FOR WHITE BIRCH(BETULA PLATYPHYLLA) FLASK CONTAINING GUS Comparison of the Decaying Ability to White Birch Wood among Four Wood Rot Fungi Stress of Surface Layer of Small-Diameter Birch Timber with Different Heating Methods Effect of Site Types on Carbon Storage of Natural White Birch Forest Ecosystem in Changbai Mountains, Northeast China The Preliminary Study on Drying Process Traverse Strains of Asian White Birch THE ECOLOGICAL MANAGEMENT AND INDUSTRIAL UTILIZATION OF WHITE BIRCH(BETULA PLATYPHYLLA) RESOURCES IN CHINA REGENERATION OF BETULA PLATYPHYLLA BY LEAF EXPLANT Infestation of Betula platyphylla by Anoplophora glabripennis and Its Control Using Insecticides Relationship between Total Phenol in White Birch Wood and Wood Rot Fungi Compatible Tree Biomass Models for Natural White Birch (Betula platyphylla) in Northeast China Forest Area