Summary of the Hydrogeology of the Valley and Ridge, Blue Ridge and Piedmont Physiographic Provinces in the Eastern Unites States : Professional Paper 1422-A. /
Swain, Lindsay A.
Summary of the Hydrogeology of the Valley and Ridge, Blue Ridge and Piedmont Physiographic Provinces in the Eastern Unites States : Professional Paper 1422-A. / Lindsay A. Swain ; T. O. Mesko ; E. F. Hollyday. - VI. - Reston, [Virginia] : U.S. Geological Survey, 2004.
გეომორფოლოგია
Summary of the Hydrogeology of the Valley and Ridge, Blue Ridge and Piedmont Physiographic Provinces in the Eastern Unites States : Professional Paper 1422-A. / Lindsay A. Swain ; T. O. Mesko ; E. F. Hollyday. - VI. - Reston, [Virginia] : U.S. Geological Survey, 2004.
გეომორფოლოგია