TY  - RPRT
TI  - Distribution of mail by destination at the San Francisco, Los Angeles, and Baltimore Post Offices 
AU  - Severo, Norman C
PY  - 1959
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS TN 27
DO  - 10.6028/NBS.TN.27
ER  -