TY  - RPRT
TI  - Collaborative reference program for rubber : analyses no. 40 April -June 1979
AU  - Horlick, J
AU  - Cummings, T L
AU  - Bullman, G W
PY  - 1979
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 79-1805
DO  - 10.6028/NBS.IR.79-1805
ER  -