Murchey, Benita <br/><br/>
The environmental and tectonic significance of two coeval Permian radiolarian-sponge associations in eastern Oregon 

 - U. S. Geological survey professional paper, 1439 .
<br/><br/>bibliogr. p. 196-198 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Faune radiolaire<br/>Eponge<br/>Tectonique<br/>Permien<br/>Paléoenvironnement<br/>Géologie régionale
<br/><br/><label>Subjects--Index Terms: </label>Etats Unis  Oregon