DAWSON GEOPHYSICAL CO

Filing Type: 425
Filing Date: 20110321

Documents

FORM 8-K
425
EX-2.1
EX-2.1
EX-2.2
EX-2.2
EX-3.1
EX-3.1
EX-10.1
EX-10.1
EX-10.2
EX-10.2
EX-99.1
EX-99.1
EX-99.2
EX-99.2
EX-99.3
EX-99.3