@misc{_Bulletin,
 copyright={Gdańsk University of Technology Library},
 howpublished={online},
 publisher={Government Printing Office.},
 language={eng},
 type={journal},
 title={Bulletin 909-C. Geophysical abstracts 94, July-September 1938},
 keywords={geology, geophysics, mineralogy, journals, United States of America},
}