TY  - BOOK
AU  - Potter,Paul Edwin
AU  - Olson,Jerry S.
TI  - Variance components of cross-bedding direction in some basal Pennsylvanian sandstones of the Eastern Interior Basin: geological application 
PY  - 0000///0
CY  - (S.l. : s.n.)
KW  - Geology
N1  - Petikan gambarfoto daripada: The journal of Geology
ER  -