anchor.diff:  by Paul Stadig +
   Oct 31, 2016
   
  -| image::http://ecx.images-amazon.com/images/I/518xLvhHZ1L._SL160.jpg[Web Development with Clojure,link="http://a.co/c2gI4l2"]
  +| image::https://images-na.ssl-images-amazon.com/images/I/518xLvhHZ1L._SL160.jpg[Web Development with Clojure,link="http://a.co/c2gI4l2"]
   | http://a.co/c2gI4l2[Web Development with Clojure] +
   by Dmitri Sotnikov +
   Aug 23, 2016
  
positive.code: by Stefan Kamphausen, Tim Oliver Kaiser +
  Sep 20, 2010
  
  | image::http://ecx.images-amazon.com/images/I/51dWGdAPwUL._SL160.jpg[Practical Clojure, link="http://a.co/fWbYqs5"]
  | http://a.co/fWbYqs5[Practical Clojure] +
  by Luke VanderHart, Stuart Sierra +
  Jun 1, 2010
  
negative.code: [width="80", cols="<.^30a,.^70", role="table"]
  |===
  
  | image::https://images-na.ssl-images-amazon.com/images/I/51UNlhb3nmL._SL160.jpg[Hands-On Reactive Programming with Clojure,link="http://amzn.com/B07N7525GX"]
  | http://amzn.com/B07N7525GX[Reactive Programming with Clojure] +
  by Konrad Szydlo, Leonardo Borges +
  Jan 25, 2019
  
  | image::https://s3.amazonaws.com/titlepages.leanpub.com/elementsofclojure/small[Elements of Clojure,link="https://leanpub.com/elementsofclojure"]
  | https://leanpub.com/elementsofclojure[Elements of Clojure] +
  by Zachary Tellman +
  