引用本文: | 胡明形, 赵姜. 未观测林业经济及其规模估算方法初探[J]. 北京林业大学学报(社会科学版), 2008, 7(1): 38-41. |
Citation: | HU Ming-xing, ZHAO Jiang. On the Methods of Estimating the Scale of Non-observed Forestry Economy[J]. Journal of Beijing Forestry University (Social Science), 2008, 7(1): 38-41. |