The Mythical Man-Month: Essays on Software Engineering by Frederick P. Brooks, Jr.
Brooks => Manager for Architecture & Operating System (OS360) development for IBM360 & was also involved in design and implementation of the IBM Stretch.
OS360 is an important product since it introduced several innovative ideas such as:
External Library Management
This book is for professional managers of software development projects.
Brooks believes large program development management suffers from problems related to division of labor.
Brooks says critical problem is preservation of conceptual integrity of the product itself => he will propose methods for preserving this unity in Chpt's 2-7.