Eurypterids of the Devonian Holland Quarry shale of Ohio / Erik N. Kjellesvig-Waering --

v.14:no.5(1961)

The stratigraphy of the Devonian Holland Quarry shale of Ohio / J. Ernest Carman --

v.14:no.1(1960)

Transactions of the Department of Agriculture of the State of Illinois with reports from county and district agricultural organizations for the year ...

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