source of Sina blog spring from Ji'nan false spring test 4
! - M -->http://blog.sina.com.c N/s/blog_4a5130e50100093m.html
1963 version of the "Ji'nan spring water distribution map" marked the seven big springs in the urban area. Ji'nan archives for drawing (part)
source: Sohu 50 years ago, seven springs sprayed jade
>! - M -->http://roll.sohu.com/20130905/n385947398.shtml
Ji'nan spring water sensitive area map
source Tencent Ji'nan subway "spring water sensitive area" confirmed!
>! - M -->http://jn.house.qq.com/a/20150926/038134.htm