Computer stamps - year 1970 - postage stamps on computer science

postage stamps year 1970

	ID#158 Country Cuba Year 1970 Issue Expo Osaka 5v Subject punched card Tag punched card
	ID#439 Country Mexico Year 1970 Issue Census 2v Subject Print characters Tag characters-other
	ID#444 Country Netherlands Year 1970 Issue Computer designs 5v Subject computer graphics Tag computer graphics
	ID#445 Country Netherlands Year 1970 Issue Computer designs 5v Subject computer graphics Tag computer graphics
	ID#446 Country Netherlands Year 1970 Issue Computer designs 5v Subject computer graphics Tag computer graphics
	ID#447 Country Netherlands Year 1970 Issue Computer designs 5v Subject computer graphics Tag computer graphics
	ID#448 Country Netherlands Year 1970 Issue Computer designs 5v Subject computer graphics Tag computer graphics
	ID#159 Country Thailand Year 1970 Issue Population census 1v Subject punched card Tag punched card