Abstract
Erik Rydberg: Stereoscopic X-ray in Obstetrics. An Atlas and a Clinical Study. Pp. 120, 19 figs., 13 tables and 40 stereograms in a separate folder, including a binocle for stereoscopic viewing. Universitetsforlaget i Aarhus, Denmark, 1969. Price US $49.—
F. E. Szontagh: The Mechanism of Action of Oral Progestogens. 176 pp., 57 figs., 47 tables. Akadëmiai Kiadö, Budapest 1970.