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BS 6215-1:1981 Methods of test for agricultural food products - Determination of crude fibre content (general method)
BS 6215-2:1981 Methods of test for agricultural food products - Determination of crude fibre content (modified Scharrer method)
BS 5131-5.11:1981 Methods of test for footwear and footwear materials. Testing of complete footwear - Determination of the strength of buckle fastening assemblies
BS 5131-6.1:1981 Methods of test for footwear and footwear materials. Codes of practice - Code of practice for the comparative evaluation by wear trial of materials, components or constructions
BS 6181:1981 Method of test for air permeability of joints in building
BS G 228:1981 Specification for clearance and fixing dimensions for 2 A and 3 A, two- and four-pole sealed electromagnetic relays for aircraft
BS 4505-1:1981 Digital data transmission - Specification for basic mode control procedures
BS CECC 22121:1981 Specification for harmonized system of quality assessment for electronic components. Blank detail specification: radio frequency coaxial connectors, series BNC
BS 4505-3:1981 Digital data transmission - Method for use of longitudinal parity to detect errors in information messages
BS CECC 90104:1981 (R1986) Specification for harmonized system of quality assessment electronic components. Family specification: C. Mos digital integrated circuits, series 4000B and 4000UB partTitleEN sectionTitleEN
BS 6043-1.4:1981 (R1997) Methods of sampling and test for carbonaceous materials used in aluminium manufacture. Electrode pitch partTitleEN sectionTitleEN