@misc{Burchard_Ernest_Francis_(1875-1961)_Bulletin,
 author={Burchard, Ernest Francis (1875-1961)},
 copyright={Gdańsk University of Technology Library},
 howpublished={online},
 publisher={Government Printing Office.},
 language={eng},
 type={journal},
 title={Bulletin 620-G. Iron-bearing deposits in Bossier, Caddo and Webster Parishes, Louisiana},
 keywords={geology, mineralogy, United States of America, journals},
}