@book{handbuch+der+tiefbohrkunde+bd+6+das+schachtbohren,
    author = {Tecklenburg, Theodor},
    title = {Handbuch der Tiefbohrkunde. Bd. 6, Das Schachtbohren},
    address = {Leipzig},
    publisher = {Verlag von W. & S. Loewenthal},
    date = {1896}
}