EN中文
A STUDY ON THE PROBLEMS BOTH OF DESERTIFICATION HAZARD AND FARMING-GRAZING CONTINUOUS DEVELOPMENT IN THE LINGWU-YANCHI REGION OF NINGXIA
Shan Pengfei, Cai Changjun, Wen Jinlin
SCIENTIA GEOGRAPHICA SINICA . 1997, (2): 163 -168 .  DOI: 10.13249/j.cnki.sgs.1997.02.163