Colonel London has developed an extensive and well-documented amount of information on the original causes of high launch costs, the specifics of current costs, and the reasons that these costs continue to be perpetuated. He offers recommendations that buck the popular trend of advanced technology solutions, and he describes how a significant reduction in launch costs would have a broad positive impact on a variety of space systems and activities. His research is thorough and his command of the subject is impressive.

Complete Atlas of the World, 3rd Edition is now fully revised and updated to reflect the latest changes in world geography, including the annexation of Crimea and the new nation of South Sudan. Bringing each featured landscape to life with detailed terrain models and color schemes and offering maps of unsurpassed quality, this atlas features four sections: a world overview, the main atlas, fact files on all the countries of the world, and an easy-to-reference index of all 100,000 place names. All maps enjoy a full double-page spread, with continents broken down into 330 carefully selected maps, including 100 city plans. You will also find a stimulating series of global thematic maps that explore Earth's place in the universe, its physical forms and processes, the living world, and the human condition. From Antarctica to Zambia, discover the Earth continent-by-continent with Complete Atlas of the World, 3rd Edition.

Masters Theses in the Pure and Applied Sciences was first conceived, published, and dis· seminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) *at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the ac· tivity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volume were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 20 (thesis year 1975) a total of 10,374 theses titles from 28 Canadian and 239 United States universities. We are sure that this broader base for theses titles reported will greatly enhance the value of this important annual reference work. The organization of Volume 20 is identical to that of past years. It consists of theses titles arranged by discipline and by university within each discipline.