TY - GEN AU - D Belsher AU - R Mclaughlin AU - Andrew Repjar AU - Ugo Bussy C2 - NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD DA - 1984-09-01 00:09:00 LA - en PB - NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD PY - 1984 TI - Detection of Lost Wells and Unknown Water-Filled Voids in CoalMines through Development of an Experimental Microwave System ER -