How relevant are these Scala books?

Question

Scala

• Alvin Alexander - Scala cookbook(2013);
  
• Bevilacqua-Linn M. - Functional Programming Patterns in Scala and Clojure(2013)
  
• Paul Chiusano, Runar Bjarnason - Functional Programming in Scala (2014)
  
• Thomas Alexandre - Scala for Java Developers (2014)
  
• Bruce Eckel Dianne Marsh - AtomicScalaV1.1 (2013)
  
• Joshua D. Suereth - Scala in Depth (2012)
  
• Lewis M. - Introduction to the Art of Programming Using Scala (2013)
  
• Loverdos C. Syropoulos A. - Steps in Scala (2010)
  
• Nilanjan Raychaudhuri - Scala in Action (2013)
  
• Horstmann CS - Scala for the Impatient (2012)
  

Answer 1

Why do you need so many? Take one book by Odersky. It has everything you need.
And what does relevant mean? All are not relevant. If you extract patterns and algorithms from these books, they will always be relevant. And if you copy implementations (code from an example or something else), relevance is not guaranteed.

Answer 2

Good afternoon, here is a must have scala book:
1) Martin Odersky, Lex Spoon, and Bill Venners - Programming in Scala, Second Edition
2) Joshua D. Suereth - Scala in Depth