TY  - RPRT
TI  - Letter Circular 408: automobile engine graphited lubricants (supersedes Letter Circular 387)
PY  - 1934
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 408r1934
DO  - 10.6028/NBS.LCIRC.408r1934
ER  -