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• 00
  Preliminary
• 10
  Proposal
• 20
  Preparatory
  • 20.00 1980-06-01
    New project registered in TC/SC work programme
  • 20.20 1981-01-01
    Working draft (WD) study initiated
• 30
  Committee
  • 30.00 1983-08-01
    Committee draft (CD) registered
  • 30.99 1985-07-08
    CD approved for registration as DIS
• 40
  Enquiry
  • 40.00 1985-07-08
    DIS registered
  • 40.20 1985-11-07
    DIS ballot initiated: 12 weeks
  • 40.60 1986-06-01
    Close of voting
  • 40.92 1987-08-06
    Full report circulated: DIS referred back to TC or SC
• 50
  Approval
  • 50.00 1987-08-27
    Final text received or FDIS registered for formal approval
  • 50.20 1987-10-22
    Proof sent to secretariat or FDIS ballot initiated: 8 weeks
  • 50.60 1987-10-22
    Close of voting. Proof returned by secretariat
• 60
  Publication
  • 60.60 1987-12-10
    International Standard published
• 90
  Review
  • 90.20 1991-11-30
    International Standard under systematic review
  • 90.60 1992-06-30
    Close of review
  • 90.92 1992-07-28
    International Standard to be revised
• 95
  Withdrawal
  • 95.99 1994-06-23
    Withdrawal of International Standard

Revised by