TY  - BOOK
AU  - Allen,Arthur Thomas
AU  - Lester,James George
TI  - ... Zonation of the Middle and Upper Ordovician strata in northwestern Georgia
T2  - Georgia. Dept. of Mines, Mining and Geology. Bulletin
AV  - QE101 .A12 no. 66
PY  - 1957///
CY  - Altanta
KW  - Geology, Stratigraphic
KW  - Ordovician
KW  - Geology
KW  - Georgia
N1  - One map in pocket in back of book; "Selected references": p. [107]
ER  -