TY  - RPRT
TI  - Publications of the National Bureau of Standards July 1, 1957, to June 30, 1960/ 
AU  - Arnold, Betty L
PY  - 1961
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NBS MP 240
DO  - 10.6028/NBS.MP.240
ER  -