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• 00
  Preliminary
• 10
  Proposal
• 20
  Preparatory
• 30
  Committee
  • 30.00 1989-05-01
    Committee draft (CD) registered
  • 30.99 1989-09-01
    CD approved for registration as DIS
• 40
  Enquiry
  • 40.00 1990-02-14
    DIS registered
  • 40.20 1990-03-08
    DIS ballot initiated: 12 weeks
  • 40.60 1990-09-01
    Close of voting
• 50
  Approval
  • 50.00 1991-01-18
    Final text received or FDIS registered for formal approval
  • 50.20 1991-03-28
    Proof sent to secretariat or FDIS ballot initiated: 8 weeks
  • 50.60 1991-03-28
    Close of voting. Proof returned by secretariat
• 60
  Publication
  • 60.60 1991-06-20
    International Standard published
• 90
  Review
  • 90.92 1995-08-23
    International Standard to be revised
• 95
  Withdrawal
  • 95.99 1997-12-18
    Withdrawal of International Standard

Revised by