TY  - RPRT
TI  - Circular of the Bureau of Standards no. 493: development of the National Bureau of Standards casting resin
AU  - Franklin, Philip J
AU  - Nyberg, Wilbur C
PY  - 1950
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 493
DO  - 10.6028/NBS.CIRC.493
ER  -