TY - RPRT TI - NBS interagency transducer project : a project report AU - Lederer, P S AU - Hilten, J S AU - Vezzetti, Carol F PY - 1975 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 75-732 DO - 10.6028/NBS.IR.75-732 ER -