TY - BOOK AU - Condra,GeoE. AU - Bengtson,N.A. TI - The Pennsylvanian formations of southeastern Nebraska, T2 - Nebraska academy of sciences. Publications AV - Q11 .N3 vol. 9, no. 2 U1 - 557.82506.2782 PY - 1915/// CY - [Lincoln?] KW - Geology KW - Nebraska N1 - At head of title: Nebraska physical and social science series; Forms Bulletin no. [2] of the Nebraska conservation and soil survey of the University of Nebraska ER -