Australia

Australia Philately: 1971 12th International Conference On Cosmic Rays

thedigitalphilatelist 16/08/1971

A temporary post office was provided at Hobart for the 12th International Conference on Cosmic Rays (16th-25th August, 1971).

Details
  • Date: 16 August 1971 – 25 August 1971
  • Quantity:
    • 3705 (ordinary articles)
    • 39 (registered articles)