TY - BOOK AU - Tetrick,Paul Roderick TI - Glacial geology of the Oberon quadrangle AV - QE150.O3 T4 U1 - 557.84 PY - 1949/// CY - Grand Forks KW - Geology KW - North Dakota KW - Oberon quadrangle KW - Glacial epoch N1 - Bibliographical foot-notes ER -