TY - GEN AU - Norman C Severo AU - Marvin Zelen AU - Arthur E Newman C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1958-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.5773 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1958 TI - Some applications of statistical sampling methods to outgoing letter mail characteristics: ER -