Citation: | Li Wenzheng, Ni Jingzhu. A STUDY ON EXPLOITATION OF RENEWABLE ENERGY SOURCES AND PREDICTION OF THE DEMAND OF FIREWOOD IN 2000, YUXI, YUNNAN[J]. Journal of Southwest Forestry University, 1993, 13(3): 155-162. DOI: 10.11929/j.issn.2095-1914.1993.03.003 |