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ISO 10207:1991/Cor 1:1991 Rock drilling equipment — Rope threaded drill steel equipment for percussive drilling, nominal sizes 22 mm to 38 mm — Technical Corrigendum 1
ISO 4172:1991 (R2018) Technical drawings — Construction drawings — Drawings for the assembly of prefabricated structures
ISO 296:1991 Machine tools — Self-holding tapers for tool shanks
ISO 296:1991 Machine tools — Self-holding tapers for tool shanks
ISO 8648:1988/Cor 1:1991 (R1997) Information processing systems — Open Systems Interconnection — Internal organization of the Network Layer — Technical Corrigendum 1
ISO 9191:1991 Lawn and garden ride-on (riding) tractors — Three-point hitch
ISO 9192:1991 (R2017) Lawn and garden ride-on (riding) tractors — One-point tubular sleeve hitch
ISO 9191:1991 (R2017) Lawn and garden ride-on (riding) tractors — Three-point hitch
ISO 6654:1991 (R2019) Animal feeding stuffs — Determination of urea content
ISO 9192:1991 (R2017) Lawn and garden ride-on (riding) tractors — One-point tubular sleeve hitch
ISO 6654:1991 (R2019) Animal feeding stuffs — Determination of urea content
ISO 605:1991 (R2017) Pulses — Determination of impurities, size, foreign odours, insects, and species and variety — Test methods