by James Bachelder Cathcart
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Phosphate-rock resources of the United S...
A summary of phosphate-rock resources of...
Economic geology of the Fort Meade quadr...
Mineralogy and chemistry of samples from...
Uranium in phosphate rock
Middle Paleozoic sedimentary phosphate i...
Kokuritsu Kokkai Toshokan shozō Meijiki ...
Cosmos
Paekche ŭi kŏnchʻuk kwa tʻomok
I wonder why the sea is salty and other ...
Engineering geology
Globalization and diversity