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• 00
  Preliminary
• 10
  Proposal
• 20
  Preparatory
• 30
  Committee
  • 30.00 1977-01-01
    Committee draft (CD) registered
  • 30.20 1981-11-01
    CD consultation initiated
  • 30.99 1981-11-01
    CD approved for registration as DIS
• 40
  Enquiry
  • 40.00 1977-11-01
    DIS registered
  • 40.20 1978-09-01
    DIS ballot initiated: 12 weeks
  • 40.92 1981-11-01
    Full report circulated: DIS referred back to TC or SC
  • 40.00 1983-06-01
    DIS registered
  • 40.20 1983-10-01
    DIS ballot initiated: 12 weeks
  • 40.60 1984-02-01
    Close of voting
  • 40.92 1985-12-01
    Full report circulated: DIS referred back to TC or SC
  • 40.00 1987-07-09
    DIS registered
  • 40.20 1987-12-30
    DIS ballot initiated: 12 weeks
  • 40.60 1988-07-01
    Close of voting
  • 40.92 1990-07-25
    Full report circulated: DIS referred back to TC or SC
• 50
  Approval
  • 50.00 1990-07-25
    Final text received or FDIS registered for formal approval
  • 50.20 1991-03-15
    Proof sent to secretariat or FDIS ballot initiated: 8 weeks
  • 50.60 1991-03-15
    Close of voting. Proof returned by secretariat
• 60
  Publication
  • 60.60 1991-05-16
    International Standard published
• 90
  Review
  • 90.92 1993-10-01
    International Standard to be revised
• 95
  Withdrawal
  • 95.99 2003-02-11
    Withdrawal of International Standard

Revised by