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A New Largest-type Variety of Asian Pear ‘Qingxiang’ A New Largest-type Variety of Asian Pear ‘Qingxiang’ TIMBER PRODUCTIVITY OF YOUNG MONGOLIAN SCOTS PINE PLANTATION IN EASTERN MOUNTAIN REGIONS OF NORTHEAST CHINA On Large-size Timber Plan ta tion Forestry of Va luable HardwoodSpec ies inWarm Sub-tropical Areas of China