tu di sha mo hua zong he zheng zhi guo ji xue shu tao lun hui lun wen ji 土地沙漠化综合整治国际学术讨论会论文集
Publisher: zhong hua ren min gong he guo ren yu sheng wu quan guo jia wei yuan hui 中华人民共和国人与生物圈国家委员会
Published: 1984.9
Language: eng
Number of pages: 170
Subjects: desert