@misc{Eckel_Edwin_Butt_(1906-1989)_Bulletin,
 author={Eckel, Edwin Butt (1906-1989)},
 copyright={Gdańsk University of Technology Library},
 howpublished={online},
 publisher={Government Printing Office.},
 language={eng},
 type={journal},
 title={Bulletin 902. The Brown iron ores of eastern Texas},
 keywords={geology, mineralogy, journals, United States of America},
}