Erich Opitz (1926) OP000983
Oliver T. Osborne OP000985
Wilhelm Ostwald (1910) OP000986
Professor Owen (ca 1840-1849) OP000988
Petrus Paaw OP000989
Julius Leopold Pagel (1912) OP000991
Pajot OP000993
Ambroise Paré OP000998
Ambroise Paré OP001001
Louis Pasteur OP001008
Louis Pasteur (1947) OP001009
Pasteur (image) (1922) OP001010_6
Pasteur OP001014
Theodor Paul (1928) OP001018
Franz Penzoldt (1927) OP001029