PORTUGAL stamps - collecting postage stamps on computer science

PORTUGAL postage stamps

	ID#86 Country Portugal Year 2005 Issue Social communication Subject @ Tag e-mail
	ID#514 Country Portugal Year 2005 Issue Communication Subject internet address Tag URL
	ID#130 Country Portugal Year 2001 Issue European cultural capital 6v Subject binary code Tag binary code
	ID#105 Country Portugal Year 2000 Issue Informatica e comunicazione Subject Alan Turing - Janos Newmann - binary code Tag binary code personalities
	ID#340 Country Portugal Year 2000 Issue Snoopy 6v Subject Snoopy with computer Tag PC
	ID#464 Country Portugal Year 1999 Issue 125th anniversary of UPU 2v Subject personal computer Tag PC
	ID#160 Country Portugal Year 1981 Issue National census 2v Subject punched card Tag punched card
	ID#161 Country Portugal Year 1981 Issue National census 2v Subject punched card Tag punched card