The Collected Papers of Albert Einstein, Volume 1: The Early Years, 1879-1902

The Variational Principles of Mechanics - Paperback, by Cornelius Lanczos - Good

The Variational Principles of - Paperback, by Cornelius Lanczos - Very Good

Albert Einstein's "Why Socialism? - 9781685900991

The Variational Principles of - Paperback, by Cornelius Lanczos - Acceptable

Albert Einstein And The Cosmic World Order By Cornelius Lanczos

Moving Beyond Page 10-12 Albert Einstein and Force and Motion

Relativity: The Special and General Theory by Einstein, Albert