TY - RPRT TI - Federal Information Processing Standards Publication: recorded magnetic tape for information interchange, 6250 cpi (246 cpmm), group coded recording PY - 1978 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS FIPS 50-1978 DO - 10.6028/NBS.FIPS.50-1978 ER -