@misc{Bowles_Oliver_(1877-1958)_Bulletin,
 author={Bowles, Oliver (1877-1958)},
 copyright={Gdańsk University of Technology Library},
 howpublished={online},
 publisher={Government Printing Office.},
 language={eng},
 type={journal},
 title={Bulletin 663. Structural and ornamental stones of Minnesota},
 keywords={geology, mineralogy, journals, United States of America},
}