Hack, John <br/><br/>
Rock control and tectonism - their importance in shaping the appalachian highlands 

 - U. S. Geological survey professional paper, 1126-B .
<br/><br/>bibliogr. p. B16-B17 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tectonique<br/>Géologie historique<br/>Erosion
<br/><br/><label>Subjects--Index Terms: </label>Etats Unis