TY - GEN AU - Williamson, Mark P C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1992-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.SP.260-118 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1992 TI - Standard Reference Materials ::Calibration of NIST standard reference material 3202 for 18-track, parallel, and 36-track, parallel serpentine, 12.65 mm (0.5 in), 1491 cpmm (37871 cpi), magnetic tape cartridge/ ER -