No block images found 		Issuer: Trinidad & Tobago
Block in sheet 9562
Date: 7/3/1979 (1979 blocks)
(4, 4 x 1)
1, 1: 10c d=Geothermal Exploration
1, 2: 35c d=Hydrogeology
1, 3: 45c d=Petroleum Exploration
1, 4: 70c d=Environmental Preservation





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