TY  - BOOK
AU  - Greacen,Katherine Fielding
AU  - Ball,John Rice
TI  - Silurian invertebrate fossils from Illinois in the Thomas A. Greene Memorial museum at Milwaukee-Downer college,
T2  - Milwaukee-Downer college bulletin
AV  - QE770 .G7
PY  - 1946///]
CY  - [Milwaukee, Wis.
KW  - Paleontology
KW  - Silurian
KW  - Illinois
N1  - Bibliography: p. 57-61
ER  -