TY  - RPRT
TI  - Third international conference on Ground penetrating radar; abstracts of the technical meeting
AU  - G.R. Olhoeft
AU  - S.K. Duke
PY  - 1990
DO  - 10.3133/ofr90414
UR  - https://pubs.usgs.gov/publication/ofr90414
ID  - ofr90414
ER  -