QED INFORMACION SCIENCES WELLESLEY, MA QED INFORMATION SCIENCES 1989 spa 188 P. 28 CM. QED INFORMATION SCIENCES. 2 1.SOFTWARE ( PROGRAMAS DE COMPUTADORA) 001.6425 A55 1988 0-89435-286-5 ITTG 241215 20250115011640.0 ITTG2551