TY  - BOOK
AU  - Freeman, Louise B.
ED  - Kentucky. Agricultural and Industrial Development Board.
TI  - Regional aspects of Silurain and Devonian stratigraphy in Kentucky
T2  - Kentucky Geological Survey., Series 9,, Bulletin
PY  - 1959///
CY  - Lexington, Ky.
KW  - გეოლოგია
KW  - სტრატიგრაფია
N1  - Reprint. Originally published: Lexington, Ky., 1951
ER  -