Perl 6 and Parrot Essentials
Allison Randal & Dan Sugalski & Leopold Totsch & Leopold Tötsch
Key Thinkers From Critical Theory to Post-Marxism
Simon Tormey & Jules Townshend
Nonlinear Physics With Mathematica for Scientists and Engineers
Richard H. Enns & George C. McGuire
Liberty Magazine November 1988
R.W. Bradford & Writers for the Liberty Magazine
Liberty Magazine (144)
Relativity: The Special and the General Theory
Albert Einstein