TY - RPRT TI - Handbook for operation and maintenance of an NBS multisensor automated EM field measurement system AU - Bensema, W D AU - Koepke, G H AU - Medley, H W PY - 1986 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 86-3056 DO - 10.6028/NBS.IR.86-3056 ER -