Trilobites of Iowa and some related Paleozoic forms
By: by Otto Theodore Walter.
Published: 1927
Place of publication: [Des Moines
Language: eng
Number of pages: 388
Subjects: Trilobites.; Paleontology -- Iowa.; Paleontology -- Paleozoic.
Notes: Bibliography : p. 339-349.
Thesis (Ph. D.)--University of Iowa, 1923.
"Reprint from Annual reports for 1923 and 1924, Iowa Geological survey, vol. 31 ... February, 1927."