TY  - RPRT
TI  - Publications and services of the National Bureau of Standards Cryogenics Division Institute for Basic Standards, Boulder, CO 80302 1953 - 1972 
AU  - Mendenhall, J R
PY  - 1973
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS TN 639
DO  - 10.6028/NBS.TN.639
ER  -