TY  - RPRT
TI  - Letter Circular 586: list of publications of interest to the general public (superseding Letter Circular 416)
PY  - 1940
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 586
DO  - 10.6028/NBS.LCIRC.586
ER  -