TY  - RPRT
TI  - Fire endurance test of an interdwelling double wall construction of paper honeycomb and gypsum board 
AU  - Son, B C
PY  - 1973
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 73-166
DO  - 10.6028/NBS.IR.73-166
ER  -