Educational collection of Wisconsin rocks
By: by Fredrik T. Thwaites.
Series: Wisconsin Geological and Natural History Survey Bulletin -- no. 63; Educational series -- no. 7; Educational series (Madison, Wis.) -- no. 7.; Bulletin (Wisconsin Geological and Natural History Survey) -- 63.
Publisher: Published by the state
Published: 1921
Place of publication: Madison, Wis
Language: eng
Number of pages: 33
Subjects: Rocks -- Catalogs and collections.; Petrology -- Wisconsin.