@misc{Bowen_Charles_F._(1871-1953)_Bulletin,
 author={Bowen, Charles F. (1871-1953)},
 howpublished={online},
 publisher={Government Printing Office.},
 language={eng},
 type={journal},
 title={Bulletin 661-I. Phosphatic oil shales near Dell and Dillon, Beaverhead County, Montana},
 keywords={geology, mineralogy, journals, United States of America},
}