Previously

Now

• 00
  Preliminary
• 10
  Proposal
• 20
  Preparatory
  • 20.00 1984-11-01
    New project registered in TC/SC work programme
  • 20.20 1984-11-01
    Working draft (WD) study initiated
• 30
  Committee
  • 30.00 1984-11-01
    Committee draft (CD) registered
• 40
  Enquiry
• 50
  Approval
  • 50.00 1987-07-01
    Final text received or FDIS registered for formal approval
  • 50.20 1987-08-27
    Proof sent to secretariat or FDIS ballot initiated: 8 weeks
  • 50.60 1987-08-27
    Close of voting. Proof returned by secretariat
• 60
  Publication
  • 60.60 1987-10-08
    International Standard published
• 90
  Review
  • 90.92 1991-11-15
    International Standard to be revised
• 95
  Withdrawal
  • 95.99 1995-12-21
    Withdrawal of International Standard

Revised by