TY  - BOOK
ED  - British Standard Institution, London
TI  - B.S. 1640 : Part 1 : 1962 : Specification for steel butt - welding pipe fittings for the petroleum industry: Part 1. wrought carbon and febric alloy steel fittings
CY  - London
PB  - British Standard Institution
N1  - STD418
ER  -