TY - RPRT TI - Circular of the Bureau of Standards no. 551: computer development (SEAC and DTSEAC) at the National Bureau of Standards Washington D. C. PY - 1955 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS CIRC 551 DO - 10.6028/NBS.CIRC.551 ER -