Swain, Frederick Morrill, 1916-
Swain, Frederick Morrill, 1916-
Peterson, James A., jt. auth.
Geological Survey professional paper ; 243-A
Ostracodes from the upper part of the Sundance Formation of South Dakota, Wyoming and Southern Montana.
Ostracodes from the upper part of the Sundance Formation of South Dakota, Wyoming and Southern Montana.
Ostracodes from the upper part of the Sundance Formation of South Dakota, Wyoming and Southern Montana.
Swain, Frederick Morrill, 1916-