TY  - BOOK
AU  - Bornhorst,Theodore J.
AU  - Johnson,R.C.
TI  - Geology of volcanic rocks in the south half of the Ishpeming greenstone belt, Michigan
U1  - 552.209774 
PY  - 1993///
CY  - Washington, DC
PB  - U.S. Government Printing Office
KW  - Volcanic ash, tuff, etc
KW  - Michigan
KW  - Geology, Stratigraphic
KW  - Archaean
KW  - Geology
KW  - Kitchi Formation
KW  - Mona Formation
N1  - Title on p. [4] of cover: Volcanic rocks, south half Ispeming greenstone belt, Michigan
ER  -