Category:Geophysical survey on stamps

Media in category "Geophysical survey on stamps"

The following 3 files are in this category, out of 3 total.

• 
  The Soviet Union 1968 CPA 3682 stamp (Controlled Explosion at Reflection Seismology and Aeromagnetic Survey) cancelled.jpg 1,881 × 1,871; 682 KB
  
• 
  The Soviet Union 1968 CPA 3682 stamp (Controlled Explosion at Reflection Seismology and Aeromagnetic Survey).jpg 897 × 892; 172 KB
  
• 
  The Soviet Union 1968 CPA 3682 stamp (Controlled Explosion at Reflection Seismology and Aeromagnetic Survey).png 897 × 892; 2.11 MB