TY  - GEN
AU  - Norman C Severo
C2  - , National Institute of Standards and Technology, Gaithersburg, MD
DA  - 1957-01-01 05:01:00
DO  - https://doi.org/10.6028/NBS.RPT.5685
LA  - en
PB  - , National Institute of Standards and Technology, Gaithersburg, MD
PY  - 1957
TI  - A statistical chain ratio method for determining the distribution of mail by destination:
ER  -