Revue Des Constellations
Megalithic Lunar Observatories
Paths of the Planets
Motion of an Artificial Satellite about its Centre of Mass
Lunar Theory
Stellar Motions
Astrodynamics Vol II
NASA TN D - 5649
Stellar Paths
Gravitational N- Body Problem
Orbital Motions
Gaseous Nebulae
Dust in the Universe
Local Interstellar Medium
Extrasolar Planets
The Dusty Universe
Molecular Collisions in the Interstellar Medium
Dark Matter in the Universe
The Orion Complex
Dark Nebulae
Cosmic Dust
The Gum Nebula and Related Problems
Diffuse Matter in Space
Interstellar Grains
Quasars, Redshifts and Controversies
Optical Jets in Galaxies
Quasar Hosts