TY  - GEN
ED  - BRITISH STANDARDS INSTITUTION
TI  - BS 1139 : Section 2.1 : 1991 : EN 74 : 1988 : Metal scaffolding: Pt. 2: Couplers: Section 2.1 specification for steel couplers, loose spigots and base-plates for use in working scaffolds and falsework made of steel tubes
PY  - 1998///
CY  - London
PB  - British Standards Institution
KW  - STEEL CONSTRUCTION-Standards
KW  - STEEL TUBES
KW  - SCAFFOLDIND
N1  - STD 322
ER  -