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Dr.Vista Dr.Vista
wrote...
Posts: 5236
6 years ago
Careful excavation requires
 
  A. detailed map and grid.
  B. heavy machinery.
  C. air photography.
  D. all of the above.
  E. none of the above.
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melly.melly.
wrote...
Posts: 316
6 years ago
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Smart ... Thanks!
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