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BS 5510:1991 Methods for determination of maximum speeds of agricultural wheeled tractors
BS 5731:1991 Specification for mountings and apertures for external equipment controls on agricultural and forestry tractors
BS 3900-A5:1991 Methods of test for paints - Large-scale brushing tests for paints and varnishes
BS 5226:1991 Code of practice for equipment and procedures for the cleaning and disinfecting of milking machine installations
BS 7440:1991 Method for calibrating field pyrheliometers by comparison to a reference pyrheliometer
BS 5925:1991 Code of practice for ventilation principles and designing for natural ventilation
BS 718:1991 (R2012) Specification for density hydrometers partTitleEN sectionTitleEN
BS 3762-0:1991 Analysis of formulated detergents - General introduction
BS 3087-1:1991 Pliers and nippers - General introduction
BS 7335-1:1991 Installation of monolithic refractories - Code of practice for installation by casting
BS 7438:1991 Specification for steel and copper alloy wafer check valves, single-disk, spring-loaded type
BS 3F 65:1991 Specification for flexible corrugated oxygen and air tubes for aircraft (natural or synthetic polyisoprene)