@misc{Schaller_Waldemar_Theodore_(1882-1967)_Bulletin, author={Schaller, Waldemar Theodore (1882-1967)}, copyright={GdaƄsk University of Technology Library}, howpublished={online}, publisher={Government Printing Office.}, language={eng}, type={journal}, title={Bulletin 620-P. Cassiterite in San Diego County, California}, keywords={geology, mineralogy, United States of America, journals}, }