Design and Implementation of Virtual Geographical Environment System of Baoji-Tianshui Expressway Based on Technologies of GIS,GPS and Remote Sensing
LI Rui, GUO Jian-wen, YAN Bao-jie, LIU Guang-xiu
JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY . 2006, (5): 787 -794 .  DOI: 10.7522/j.issn.1000-0240.2006.0115

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