@Misc{BDCM20214640755, title = "Schulwandkarten [Material cartogr\'{a}fico] ]: Deutschland", author = "Harms, Heinrich, 1861-1933", publisher = "Leipzig : Verlag List \& von Bressensdorf", editor = "Verlag List \& von Bressensdorf", series = "(H. Harms Schulwandkarten)", URL = "https://bibliotecavirtualmadrid.comunidad.madrid/bvmadrid_publicacion/es/consulta/registro.do?id=503833", year = "1930", }