sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:A_text-book_of_pathology_(IA_textbookofpathol00sten_2).pdf...
for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:A_text-book_of_pathology_(IA_textbookofpathol00sten).pdf...
sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:A_text-book_of_pathology_(IA_textbookofpathol00sten_0).pdf...
sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:A_text-book_of_pathology_(IA_textbookofpathol00sten_1).pdf...