Petzold
Aubrey
Some aspects of tunnel surveying
1977
Not available for use outside of the University of New Brunswick
Fredericton
Engineering
Senior Report
electronic
Petzold, Aubrey G (1977). Some aspects of tunnel surveying . (Engineering Senior Report no. TR-412-SU 1977). Fredericton : University of New Brunswick, Dept. of Geodesy and Geomatics Engineering TR-412-SU 1977 1882/17298