TY  - BOOK
AU  - Gradstein, F.M.
AU  - Agterberg, F.P.
TI  - Quantitative Stratigraphy
SN  - 9027721165
U1  - 551.7 G61Q 
PY  - 1985///
CY  - Dordrecht
PB  - D. Reidel Publishing Company
KW  - Stratigraphy
ER  -