CLAYTON WILLIAMS ENERGY INC /DE
Filing Type: S-4
Filing Date: 20111213
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S-4
S-4
EX-5.1
EX-5.1
EX-12.1
EX-12.1
EX-23.1
EX-23.1
EX-23.2
EX-23.2
EX-23.3
EX-23.3
EX-25.1
EX-25.1