by Ji Hanwen, Shi Changjun, Chen Peiren (Heilongjiang Provincial Normal School of Reclamation, Mishan (China))
Published in Research of Natural Resources (China) (01.02.1988)

by Zhu Dan, Li Xiabing, Sun Xichang (Academia Sinica, Shenyang (China). Inst. of Forestry and Pedology)
Published in Research of Natural Resources (China) (01.03.1988)

by Deng Yucheng (Academia Sinica, Shenyang (China). Inst. of Forestry and Pedology)
Published in Research of Natural Resources (China) (01.02.1988)

by Zhu Ning, Guo Weiming, Jin Yongyan (Northeast Forestry Univ., Harbin (China))
Published in Research of Natural Resources (China) (01.02.1988)

by Zhao Guangyi, Hou Aiju, Wei Chunru (Northeast Forestry Univ., Harbin (China))
Published in Researches of Natural Resources (China) (01.05.1988)

by Li Renyu (Heilongjiang Coll. of Chinese Traditional Medicine, Harbin (China). Dept. of Chinese Traditienal Drugs)
Published in Researches of Natural Resources (China) (01.05.1988)

by Wang Zhan (Academia Sinica, Shenyang (China). Inst. of Forestry and Pedology)
Published in Researches of Natural Resources (China) (01.05.1988)

by Cheng Jizen, Shen Cheng, Guan Jiasheng (Heilongjiang Academy, Harbin (China). Inst. of Natural Researces)
Published in Researches of Natural Resources (China) (01.05.1988)