Keen - Decision Support Systems Lessons for the 80's - New paperback - X555z

Keen - Information Systems and Organizational Change - New paperback o - X555z

Keen - Decision Support Systems and the Marginal Economics of Effort - - X555z

Spengler - Hour of Decision - New paperback or softback - 35 - X555z

Keen - Ultimate Reading FC Quiz Book - New paperback or softback - X555z

Decision Support Systems and Personal Computing (Classic Reprint)

Miles - Too Keen - New paperback or softback - X555z

Decision Support Systems and Personal Computing (Classic Reprint)