Volume 37 • 1940 • Annual Reports, 1934, 1935, 1936, 1937, 1938, and 1939, with Accompanying Papers

Front Matter, Iowa Geological Survey, Volume XXXVII, Annual Reports, 1934, 1935, 1936, 1937, 1938, and 1939, with Accompanying Papers

1941-01-01 Volume 37 • 1940 • Annual Reports, 1934, 1935, 1936, 1937, 1938, and 1939, with Accompanying Papers • i-vi

Forty-Third, Forty-Fourth, Forty-Fifth, Forty-Sixth, Forty-Seventh and Forty-Eighth Annual Reports of the State Geologist

Arthur C. Trowbridge

1941-01-01 Volume 37 • 1940 • Annual Reports, 1934, 1935, 1936, 1937, 1938, and 1939, with Accompanying Papers • vii-xiv

The Pleistocene Gravels of Iowa

George F. Kay and Paul T. Miller

1941-01-01 Volume 37 • 1940 • Annual Reports, 1934, 1935, 1936, 1937, 1938, and 1939, with Accompanying Papers • 1-232

Pollen Analysis of Interglacial Peats of Iowa

Geo. H. Lane

1941-01-01 Volume 37 • 1940 • Annual Reports, 1934, 1935, 1936, 1937, 1938, and 1939, with Accompanying Papers • 233-262

The Geology of Adams County

Lyman W. Wood

1941-01-01 Volume 37 • 1940 • Annual Reports, 1934, 1935, 1936, 1937, 1938, and 1939, with Accompanying Papers • 263-374

Mineral Production in Iowa for the years 1933-1938

H. Garland Hershey

1941-01-01 Volume 37 • 1940 • Annual Reports, 1934, 1935, 1936, 1937, 1938, and 1939, with Accompanying Papers • 375-446

A Summary of Mineral Production in Iowa 1895-1938

H. Garland Hershey

1941-01-01 Volume 37 • 1940 • Annual Reports, 1934, 1935, 1936, 1937, 1938, and 1939, with Accompanying Papers • 447-474