@misc{unknown_Dawid,
 author={unknown},
 howpublished={online},
 type={photography},
 title={Dawid Obersztern, Laja Obersztern nee Flam-Grad and Rozalia Obersztern},
 keywords={Lublin, Lubliners, Dawid Obersztern, Laja Obersztern nee Flam-Grad, Rozalia Obersztern},
}