TY  - RPRT
TI  - Laboratory-field comparisons of built-up roofing membranes 
AU  - Boone, Thomas H
PY  - 1968
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS TN 473
DO  - 10.6028/NBS.TN.473
ER  -