TY  - RPRT
TI  - Circular of the Bureau of Standards no. 491: control of odors
AU  - Weaver, Elmer R
PY  - 1950
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 491
DO  - 10.6028/NBS.CIRC.491
ER  -