
A NEW SURVEYING METHOD ON EXISTING RAILWAY FOR IN-CREASING LEVELLING ACCURACY FROM 1/2 000 TO 1/10000
LIU Zhiyi,SUN Jizhong
Journal of Railway Engineering Society ›› 1999, Vol. 16 ›› Issue (1) : 9-12.
A NEW SURVEYING METHOD ON EXISTING RAILWAY FOR IN-CREASING LEVELLING ACCURACY FROM 1/2 000 TO 1/10000
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