TY - GEN AU - Mantek, Paul A AU - Geller, Sidney B C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1969-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.SP.260-18 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1969 TI - Standard Reference Materials ::Calibration of NBS secondary standard magnetic tape (computer amplitude reference) using the reference tape amplitude measurement Process A/ ER -