TY  - RPRT
TI  - Examination of failed four inch cast iron pipe natural gas main, Philadelphia Gas Works, Philadelphia, Pennsylvania 
AU  - Shives, T R
PY  - 1974
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 74-594
DO  - 10.6028/NBS.IR.74-594
ER  -