TY  - BOOK
AU  - Geyh,Mebus A.
AU  - Schleicher, Helmut
AU  - Newcomb,R.Clark
TI  - Absolute age determination: physical and chemical dating methods and their application
SN  - 3-540-51276-4
PY  - 1990///
CY  - Berlin, Heidelberg
PB  - Springer
ER  -