Unidir United Nations Institute For Disarmament Research 
Peaceful and Non-Peaceful Uses of Space [PDF ebook] 
Problems of Definition for the Prevention of an Arms Race

This book, first published in 1991, is the cumulative result of a long period of research by qualified experts in an attempt to analyse the legal and scientific problems of arriving at definitions in the task of preventing an arms race in outer space. Problems of definition confront the negotiator at the very outset of any discussion on preventing a space arms race – this book sets out to remove these problems by examining the possible definitions.