TY  - RPRT
TI  - Circular of the Bureau of Standards no. 87, 2nd edition : United States government specification for zinc oxide, dry and paste
PY  - 1922
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 87e2
DO  - 10.6028/NBS.CIRC.87e2
ER  -