TY  - RPRT
TI  - Collaborative reference program for rubber : Analyses no. 43 January - March 1980
AU  - Cummings, T L
AU  - Horlick, J
AU  - Bullman, G W
PY  - 1980
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 80-1835
DO  - 10.6028/NBS.IR.80-1835
ER  -