"Astronomy and Astrophysics Abstracts" appearing twice a year has become oneof the fundamental publications in the fields of astronomy, astrophysics andneighbouring sciences. It is the most important English-language abstracting journal in the mentioned branches. The abstracts are classified under more than a hundred subject categories, thus permitting a quick survey of the whole extended material. The AAA is a valuable and important publication for all students and scientists working in the fields of astronomy and related sciences. As such it represents a necessary ingredient of any astronomical library all over the world.

Inhalt

A.- Concordance Relation.- Abbreviations.- Periodicals, Proceedings, Books, Activities.- Applied Mathematics, Physics.- Astronomical Instruments and Techniques.- Positional Astronomy, Celestial Mechanics.- Space Research.- Theoretical Astrophysics.- Sun.- Earth.- Planetary System.- B.- Stars.- Interstellar Matter, Nebulae.- Radio Sources, X-ray Sources, Cosmic Rays.- Stellar Systems, Galaxy, Extragalactic Objects, Cosmology.