TY  - BOOK
AU  - AGTERBERGF.M
AU  - browerj.c
AU  - schwarzacherw.s
TI  - Quantitative stratigraphy / 
SN  - 9231023365
U1  - 551.701 
PY  - 1985///.
CY  - Paris : 
PB  - Unesco, 
KW  - Geology.
KW  - Stratigraphic.
ER  -