by Jerry M. Hoffer
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Geology of Potrillo Basalt field, south-...
Geothermal exploration of Western Trans-...
Trans-Pecos region, southeastern New Mex...
Plagioclase variations in a porphyritic ...
Mineral commodity report, pumice and pum...
Pumice and pumicite
Evaluation of pumice mining claims at Ro...
Report on the pumice stone industry of t...
La storia della pomice di Lipari
Der rheinische Bimsstein