TY  - BOOK
AU  - Martin,Helen M.
AU  - Straight,Muriel Tara
TI  - An index of the geology of Michigan, 1823-1955
AV  - Z6034.U5 M63
U1  - 016.557774 
PY  - 1956///]
CY  - Lansing
PB  - Speaker-Hines & Thomas, State printers
KW  - Geology
KW  - Michigan
KW  - Bibliography
KW  - Geological Survey Division
N1  - Includes bibliographies
ER  -