Galactic structure / edited by Adriaan Blaauw and Maarten Schmidt. Schmidt, Maarten. Galaxies Congresses. Radio astronomy Congresses. Astrometry Congresses. QB856 .O27 1965 523.85 20 BLM Some lectures in French. "International summer course held under the auspices of the NATO Science Committee in Lagonissi, near Athens, Greece, 9-23 September 1964"--Cover. Includes index. Chicago : University of Chicago Press, 1965. 1965. 1965 Text xx, 606 p.: eng engfre