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Viking mission to Mars (Gabon)
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Viking Program (Upper Volta)
Viking on Mars 2nd issue of United States
Short desc: Viking on Mars 2nd
Issuer:
United States
Date: 7/20/1978
Occasion:
Viking on Mars
Number/Year: 2
Consists of 1 stamp:
(See stamps as list)
15c d=Viking 1 Lander Scooping Up Soil on Mars
All are perf=11
Record of changes