SS-ISO-4251-4 Complete Document History
Tyres (ply rating marked series) and rims for agricultural tractors and machines - Part 4: Tyre classification and nomenclature (ISO 4251-4:2010, IDT)

Complete Current Edition:
   2010 EDITION - ENGLISH LANGUAGE EDITION - April 12, 2010

Obsolete Revision Information:
   EDITION 2 - ENGLISH LANGUAGE EDITION - April 29, 1993
   EDITION 1 - ENGLISH LANGUAGE EDITION - April 22, 1987