@misc{Nickles_John_M._(1859-1945)_Bulletin,
 author={Nickles, John M. (1859-1945)},
 howpublished={online},
 publisher={Government Printing Office.},
 language={eng},
 type={czasopismo},
 title={Bulletin 784. Bibliography of North American geology for 1923-1924},
 keywords={Geologia},
}