TY  - BOOK
AU  - Grabau, Amadeus W.
TI  - PRINCIPLES OF STRATIGRAPHY
U1  - 550 
PY  - 1960///
CY  - N. Y.
PB  - Dover Publications
KW  - Geology, Stratigraphic
N1  - Unabridged And Unaltered Republication Of The Last Revised Edition Published In 1924
ER  -