TY  - GEN
AU  - Belsher, D R
AU  - McKaughlin, R H
AU  - Repair, A G
AU  - Bussey, H E
C2  - , National Institute of Standards and Technology, Gaithersburg, MD
DA  - 1984-01-01 05:01:00
DO  - https://doi.org/10.6028/NBS.IR.84-3017
LA  - en
PB  - , National Institute of Standards and Technology, Gaithersburg, MD
PY  - 1984
TI  - Microwave detection of lost wells and unknown water-filled voids in coal mines:
ER  -