TY - BOOK AU - Ballard,Frederick V. TI - Structural and stratigraphic relationships in the paleozoic rocks of eastern North Dakota AV - QE149 .B3 PY - 1963/// CY - Grand Forks, N.D. KW - Geology KW - North Dakota KW - Geology, Stratigraphic KW - Paleozoic KW - Petrology N1 - Part of illustrative matter folded in envelope; Bibliography: p. 39-42 ER -