http://www.plcmanual.com Basic Guide to PLCs Fri, 19 Feb 2010 07:51:12 +0000 http://wordpress.org/?v=2.6.5 en http://www.plcmanual.com/archives/24 http://www.plcmanual.com/archives/24#comments Thu, 24 Apr 2008 17:13:08 +0000 admin http://www.plcmanual.com/archives/24 Useful and recommended books on amazon.com :

   

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