The nature and origin of cone-in-cone structure
By: Bertram G. Woodland --
Series: Chicago Natural History Museum. Publication -- 977; Fieldiana: geology -- v. 13, no. 4; Publication (Chicago Natural History Museum) -- 977.; Fieldiana -- v. 13, no. 4
Publisher: Chicago Natural History Museum Press
Published: 1964
Place of publication: Chicago
Subjects: Concretions.
Other titles: Cone-in-cone structure