Free SciTech ebooks/etexts

A round-up of ones I noticed relatively recently, some of current value, some historical:

• Open Access Bibliography by Charles Bailey (OAN).
  
• Scholarly Communication, the Information Chain and Technology: Analyses and Reflexions by Neil Jacobs
  
• Unified mathematical treatment of complex cascaded bipartite networks: The case of collections of journal papers by Steven A. Morris
  
• A Short Introduction to Operating Systems
  
• Understanding Algebra by James Brennan
  
• Programming Languages by Scott F. Smith
  
• Oracle Grid Computing Glossary
  
• Introduction to Matrix Algebra by Autar K. Kaw
  
• Getting the most out of vacuum tubes and over a dozen other historical technical books (MAKE).
  
• Dictionary of Algorithms and Data Structures (Topix).

Textbook Revolution is a good aggregator site (OAN).