@misc{Cushing_Henry_Platt_(1860-?)_Bulletin,
 author={Cushing, Henry Platt (1860-?) and Leverett, Frank (1859-1943) and Van Horn, Frank Robertson (1872-1933)},
 howpublished={online},
 publisher={Government Printing Office.},
 language={eng},
 type={journal},
 title={Bulletin 818. Geology and mineral resources of the Cleveland District, Ohio},
 keywords={geology, mineralogy, United States of America, journals},
}