@misc{Hopkins_Oliver_Baker_Bulletin,
 author={Hopkins, Oliver Baker},
 copyright={Biblioteka Politechniki Gdańskiej},
 howpublished={online},
 publisher={Government Printing Office.},
 language={eng},
 type={czasopismo},
 title={Bulletin 661-H. Oil and Gas possibilities of the Hatchetigbee Anticline, Alabama},
 keywords={geologia, mineralogia, czasopisma, Alabama (Stany Zjednoczone ; stan)},
}