Merge pull request #1362 from TrueGrom/patch-1

Add "Practical Common Lisp" book

free-programming-books-ru.md

@@ -135,6 +135,7 @@
 
 ### Lisp
 * [Lisp In Small Pieces (translation)](https://github.com/ilammy/lisp)
+* [Practical Common Lisp(translation)](http://lisper.ru/pcl)
 
 
 ### MetaPost