BS 4505-1:1981 Digital data transmission. Specification for basic mode control procedures standard by BSI Group, 11/30/1981
BS 5551-4.1.1:1981 Fertilizers. Chemical analysis. Determination of nitrogen. Nitron gravimetric method for determination of nitrate nitrogen standard by BSI Group, 11/30/1981
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 standard by BSI Group, 11/30/1981
BS 3322:1981 Specification for carpenters' squares and bevels standard by BSI Group, 11/30/1981
BS 6215-2:1981 Methods of test for agricultural food products. Determination of crude fibre content (modified Scharrer method) standard by BSI Group, 11/30/1981
BS 6215-1:1981 Methods of test for agricultural food products. Determination of crude fibre content (general method) standard by BSI Group, 11/30/1981
BS 6206:1981 Specification for impact performance requirements for flat safety glass and safety plastics for use in buildings standard by BSI Group, 11/30/1981
BS 4247-1:1981 Surface materials for use in radioactive areas. Methods of measuring and evaluating the decontamination factor standard by BSI Group, 11/30/1981
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 standard by BSI Group, 11/30/1981
BS 4727-2:GROUP 09:1981 Glossary of electrotechnical, power, telecommunication, electronics, lighting and colour terms. Terms particular to power engineering. Transductor terminology standard by BSI Group, 11/30/1981
BS 6089:1981 Guide to assessment of concrete strength in existing structures standard by BSI Group, 11/30/1981
BS 4895:1981 Specification for semi-tubular rivets for general purpose use standard by BSI Group, 11/30/1981