Oertel, Gerhard & Curtis, Charles D books & textbook
CLAY-IRONSTONE CONCRETION PRESERVING FABRICS DUE TO PROGRESSIVE COMPACTION
Oertel, Gerhard & Curtis, Charles D
Geol Soc Amer Bull /1972T Pamphlet
Oertel, Gerhard & Curtis, Charles D
Geol Soc Amer Bull /1972T Pamphlet