by Frank Leverett
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The water resources of Illinois
Moraines and shore lines of the Lake Sup...
The Pleistocene Features and Deposits of...
The Pleistocene of northern Kentucky
Flowing wells and municipal water suppli...
The Lost World
Before Adam
Ancient law, its connection with the ear...
Paekche ŭi sŏnggwak kwa kŏnchʻuk
Back to the Stone Age
The Mammoth Hunters