Concurrent Programming in Java - Lea Addison-Wesley - Used Good

Programming Erlang: Software for a Concurrent World, Joe Armstrong, Used; Good B

Concurrent Programming in Java: Design - Paperback, by Doug Lea; Douglas - Good

Windows Forms Programming in C# - 9780321116208, paperback, Chris Sells

Programming Crystal: Create High-Performance, Safe, Concurrent Apps

Concurrent and Real-Time Programming in Java by

Concurrent Programming in Java: Design Principles and Pattern... - Lea, Doug

Parallel and Concurrent Programming in Haskell, Marlow, Simon, Good Book