Art of R Programming
Norman Matloff
Clojure for the Brave and True
Daniel Higginbotham
Practical Machine Learning with H2O
Darren Cook
Building Evolutionary Architectures
Neal Ford & Rebecca Parsons & Patrick Kua & and Pramod Sadalage
Time Series Databases
Ted Dunning & Ellen Friedman
Graph Databases
Ian Robinson & Jim Webber & Emil Eifrem