"Aspects of chemical evolution" XVIIth Solvay Conference on chemistry : Edited by G. Nicolis, 1984, Wiley-Interscience, 286p., $50.00

"Aspin" bubbles: a mechanical theory for the unification of the forces of Nature

"Aspin" Bubbles: mechanical project for the unification of the forces of nature

"Assisted cloning'' and "orthogonal-complementing" of an unknown state

"Asteroid" 2060 Chiron: Blurring the distinction between asteroids and comets

"Asteroid" 2060 Chiron: Status Report on Probable Cometary Activity

"Astro à l'Ecole" equipment plan

"Astron" studies X-ray pulsars.

"Astronomica" in the Correspondence between Leonhard Euler and Daniel Bernoull (German Title: "Astronomica" im Briefwechsel zwischen Leonhard Euler und Daniel Bernoulli)

"Astronomical Data Networks" - Opening Address

"Astronomical" Organ Concert in the La Serena Cathedral

"Astronomie/vor Ort" - an Education Project in Astronomy for Primary Schools

"astronomy Improved"

"Astronomy" or "astrology": a brief history of an apparent confusion

"Asymptotic Parabolic" Fit for Light Curves

"Atlas of Secular Light Curves of Comets"

"Atmospheric Neutrino" and "Proton Decay" Data Exclude Some New Dark Matter Scenarios

"Atomic Oxygen on Venus"

"Audacity or Precision": The Paradoxes of Henri Villat's Fluid Mechanics in Interwar France

"Autothixotropy" of Water - an Unknown Physical Phenomenon