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Links:

C short course lecture notes
www.tenouk.com
JTC1/SC22/WG14
C89/C90/C95, C99
ISO/IEC  9899:2011
American National Standards Institute
Embedded C also  included under WG14
Secure  C coding standard
Monthly  TIOBE Programming Community Index
The Transparent Language Popularity  Index
Jobs Tractor language trends  September 2012