Decision Making for Leaders: The Analytic Hierarchy Process for Decisions in a Complex World, New Edition 2001 (Analytic Hierarchy Process Series, Vol. 2)
This book addresses the issue of how to structure a complex situatioin, identify its criteria and other factors whether intangible or concrete, measure the interactions among them in a simple way, and synthesize all the information to obtain priorities.  The priorities can then be used in a fenefit/cost setting to develop portfolios of activities, one of the major concerns of organizations today.