..............page:13-16,28
Automated portarying of contours in DEM
zhang wei-jun~1; li yong-jun~2; liu xiang-yang~3 (1.shool of earth science and resources management; chang an university; xi an 710054; china; 2.north road engineering construct group of hebei province; hebei chengde 067400; china; 3.cheng jiao mining of yongcheng; henan yongcheng 476600; china)
..............page:76-78
..............page:41-45,51
..............page:21-23,60