Book excerpt: Annals of the International Geophysical Year, Volume XI: Symposia at the Fifth Meeting of CSAGI covers the proceedings of the Fifth Meeting of CSAGI held in Moscow on July 30-August 8, 1958. This meeting discusses the practical details of the mechanics and techniques of data collection and utilization, and later held symposia at which the first results of the IGY were presented. This text presents the results of various scientific activities during the IGY, including numerical forecasting, meteorology, geomagnetism, ionosphere, aurora, airglow, solar activity, cosmic rays, glaciology, oceanography, rockets, satellites, seismology, gravimetry, and nuclear radiation. This book will be of value to geophysicists, historians, and researchers.