Computer stamps - year 1971 - postage stamps on computer science

postage stamps year 1971

	ID#169 Country Canada Year 1971 Issue Census Subject punched card, magnetic tape Tag punched card magnetic tape
	ID#888 Country Egypt Year 1971 Issue Police Day 1v Subject control center Tag control center
	ID#163 Country Lebanon Year 1971 Issue UNESCO 2v Subject punched card Tag punched card
	ID#164 Country Lebanon Year 1971 Issue UNESCO 2v Subject punched card Tag punched card
	ID#768 Country Lebanon Year 1971 Issue Development 12v Subject printed circuit Tag printed circuit
	ID#421 Country Liechtenstein Year 1971 Issue Olympic winter games 4v Subject magnetic ink characters, computer font Tag characters-MICR
	ID#422 Country Liechtenstein Year 1971 Issue Olympic winter games 4v Subject magnetic ink characters, computer font Tag characters-MICR
	ID#423 Country Liechtenstein Year 1971 Issue Olympic winter games 4v Subject magnetic ink characters, computer font Tag characters-MICR
	ID#424 Country Liechtenstein Year 1971 Issue Olympic winter games 4v Subject magnetic ink characters, computer font Tag characters-MICR
	ID#162 Country Netherlands Year 1971 Issue National census 1v Subject punched card Tag punched card