TY  - GEN
AU  - Hughes, Ernest E
AU  - Dorko, William D
AU  - Taylor, John K
C2  - , National Institute of Standards and Technology, Gaithersburg, MD
DA  - 1973-01-01 05:01:00
DO  - https://doi.org/10.6028/NBS.IR.73-255
LA  - en
PB  - , National Institute of Standards and Technology, Gaithersburg, MD
PY  - 1973
TI  - System for preparation of known concentrations of methane in air:
ER  -