TY  - RPRT
TI  - Circular of the Bureau of Standards no. 174: United States government master specification for the construction of built-up roofing, type 5ACS
PY  - 1924
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 174
DO  - 10.6028/NBS.CIRC.174
ER  -