ZuPriNcer. — Strahlentherap:e

ASE

389. Zworykin (V. K.) et Wäiison (E. D). — Les cellules photo-électriques et leurs applications, Dunod, Paris, 1937.

Æ # % 390. — Données pratiques sur l'absorption des rayons X par le plomb. Bull. de la Ci° générale de Radiologie, 1930, 17-19. 39. — Gamma rays and high-voltage X-rays in beam therapy. Radiography, may 1937, 29, 65-66.

392. — General recommendations of the National Laboratories for the Standardisation oi X-Ray Dosimeters. Brit J. of Radiology, 1934, 7, 304.

393. — International recommendations for radiological units. Brit. J. of Radiology, June 1937, 10, 438-444.

394. — Symposium on : Factors influencing the quantitative measurements oi the rœntgen-ray absorption of tooth slabs. CROSS SMS NS TL 355. — Symposium on : The relative effects produced by 200 kV. rœntgen

rays, 700 KV. rœntgen rays, and gamma ravs. Am. J. of Rœntgenol. & Rad. Therapy, March 1933, 29, 293-367. Cine :29,976, 849521590716 387: