@misc{Howell_Ralph_W._Bulletin,
 author={Howell, Ralph W. and Wegemann, Carroll Harvey (1879-?)},
 copyright={Gdańsk University of Technology Library},
 howpublished={online},
 publisher={Government Printing Office.},
 language={eng},
 type={journal},
 title={Bulletin 621-G. The lawton oil and gas field, Oklahoma},
 keywords={geology, mineralogy, United States of America, journals},
}