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free-programming-books.md

@@ -1696,7 +1696,6 @@ See also [LaTeX](#latex)
 
 
 ###Verilog
-* [Introduction to Verilog](http://vol.verilog.com/VOL/main.htm)
 * [Verilog Tutorial](http://www.asic-world.com/verilog/veritut.html)