TY  - BOOK
AU  - Del Grande, Nancy, ed.
TI  - Underground and Obscured Object Imaging and Detection
T2  - Proceedings of SPIE; V. 1942
SN  - 9780819411785 (Print)
PY  - 1993///
CY  - Washington, USA
PB  - SPIE
UR  - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/1942
ER  -