TY  - RPRT
TI  - Outdoor performance of plastics: I. introduction and color-change
AU  - Clark, Joseph E
AU  - Giesecke, Paul
PY  - 1968
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS RPT 9912
DO  - 10.6028/NBS.RPT.9912
ER  -