TY - RPRT TI - NBS InterAgency Transducer Project : Progress report no. 4 AU - Lederer, P S AU - Hilten, J S AU - Vezzetti, C F AU - Mayo-Wells, J F PY - 1976 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 76-1060 DO - 10.6028/NBS.IR.76-1060 ER -