Sommaire

Contents
Saug- und Rückstrom in Diffusionpumpen
p. 3-14
Contribution to the problematics of cuprous oxide rectifiers
p. 15-28
Elektrische Erscheinungen bei der plastischen Deformation von Silberchloridkristallen
p. 29-32
Problems of origin and evolution of the Kreutz family of Sun-grazing comets
p. 33-84
Intensity distribution of Cyanogen and Carbon bands in comet Everhart (1964 h)
p. 85-95