@misc{Osterley_Carl_jr._Prof._1920,
 author={Osterley Carl, jr.},
 abstract={awers},
 title={Prof. Carl Osterley jr., Bauernknabe vom Hardanger Fjord},
 address={Hamburg},
 year={1920 ca},
 type={pocztówka},
 publisher={“Erpaco” Kunstverlag},
}