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• 00
  Preliminary
• 10
  Proposal
• 20
  Preparatory
• 30
  Committee
  • 30.00 1979-03-01
    Committee draft (CD) registered
• 40
  Enquiry
• 50
  Approval
  • 50.00 1979-03-01
    Final text received or FDIS registered for formal approval
  • 50.20 1979-07-01
    Proof sent to secretariat or FDIS ballot initiated: 8 weeks
  • 50.60 1979-07-01
    Close of voting. Proof returned by secretariat
• 60
  Publication
  • 60.60 1979-09-01
    International Standard published
• 90
  Review
• 95
  Withdrawal
  • 95.99 1985-09-01
    Withdrawal of International Standard

Revised by