For abstract, see NSA 31 02, number 03573.
Use of Advanced Technologies for Locating Underground Obstacles. Final Report
1974
166 pages
Report
No indication
English
Aid in locating underground piping
Engineering Index Backfile | 1943
|Development of underground transport systems : final report
TIBKAT | 1978
|An Advanced Balloon Locating System
NTIS | 1975
|