EN中文
A STUDY ON DRYNESS/WETNESS DISTRIBUTION AND ABRUPT CHANGE IN MID-LOWER REACHES OF THE HUANG HE(YELLOW) RIVER VALLEY
Yin Xungang, Wu Xiangding
Acta Geographica Sinica . 1993, (2): 177 -185 .  DOI: 10.11821/xb199302010