TY  - RPRT
TI  - Circular of the Bureau of Standards no. 155: United States government master specification for coal-tar pitch for waterproofing and damp proofing
PY  - 1924
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 155
DO  - 10.6028/NBS.CIRC.155
ER  -