Acoustics - Hearing protectors - Part 4: Measurement of effective sound pressure levels for level-dependent sound-restoration ear-muffs (ISO/TR 4869-4:1998)
Edition 2000-07

Cranes and related equipment; classification; part 4: jib cranes
Edition 1989-09

Cranes; information to be provided; part 4: jib cranes
Edition 1989-10

Copper and copper alloys; Terms and definitions; Part 4 : Castings
Edition 1983-12

Explosion protection systems; Part 4 : Determination of efficacy of explosion suppression systems
Edition 1985-11

Furniture; Tests for surfaces; part 4: assessment of resistance to impact
Edition 1988-07

Glass; Viscosity and viscometric fixed points; Part 4 : Determination of viscosity by beam bending
Edition 1987-12

Information technology; open systems interconnection; structure of management information; part 4: guidelines for the definition of managed objects
Edition 1992-09

General methods of test for pigments and extenders; Part 4 : Determination of acidity or alkalinity of the aqueous extract
Edition 1981-09

Pigments and extenders; methods of dispersion for assessment of dispersion characteristics; part 4: dispersion using a bead mill
Edition 1990-11