@book{Laack2022,
  author    = {Laack, Walter van},
  title     = {Aufruf zum Nachdenken: Corona und neue Kriege - Wie kann die Menschheit {\"u}berleben?},
  publisher = {van Laack GmbH},
  address   = {Aachen},
  isbn      = {978-3-936624-56-4},
  pages     = {56 Seiten},
  year      = {2022},
  language  = {de}
}
@book{Laack2019,
  author    = {Laack, Walter van},
  title     = {Weltbilder gestern und heute - Was bleibt und wor{\"u}ber lacht man morgen?},
  series = {Vortr{\"a}ge \& Einsichten, Lectures \& Insights},
  journal   = {Vortr{\"a}ge \& Einsichten, Lectures \& Insights},
  number    = {Band 2},
  publisher = {van Laack Buchverlag},
  address   = {Aachen},
  isbn      = {ISBN 978-3936624-44-1},
  pages     = {56 Seiten},
  year      = {2019},
  language  = {de}
}
@book{Laack2018,
  author    = {Laack, Walter van},
  title     = {Sterben und Tod aus wissenschaftlicher Sicht - dying and death from a scientific point of view},
  publisher = {van Laack GmbH},
  address   = {Aachen},
  isbn      = {978-3-936624-41-0},
  pages     = {44 Seiten},
  year      = {2018},
  language  = {de}
}
@book{Laack2000,
  author    = {Laack, Walter van},
  title     = {Key to Eternity / Walter van Laack. [Transl. by Anneliese Wolstenholme]},
  publisher = {van Laack},
  address   = {Aachen},
  isbn      = {978-3-8311-0344-7},
  pages     = {256 S.},
  year      = {2000},
  language  = {en}
}
@book{Laack2022,
  author    = {Laack, Walter van},
  title     = {Greater Than the Entire Universe},
  publisher = {van Laack GmbH},
  address   = {Aachen},
  isbn      = {978-3-936624-52-6},
  pages     = {120 Seiten},
  year      = {2022},
  language  = {en}
}
@book{LabischWaehlisch2017,
  author    = {Labisch, Susanna and W{\"a}hlisch, Georg},
  title     = {Technisches Zeichnen: Eigenst{\"a}ndig lernen und effektiv {\"u}ben},
  edition   = {5. {\"u}berarbeitete Auflage},
  publisher = {Springer Vieweg},
  address   = {Wiesbaden},
  isbn      = {978-3-658-18312-7},
  doi       = {10.1007/978-3-658-18313-4},
  pages     = {XI, 300 Seiten ; Illustrationen},
  year      = {2017},
  language  = {de}
}
@book{LabischWaehlisch2020,
  author    = {Labisch, Susanna and W{\"a}hlisch, Georg},
  title     = {Technisches Zeichnen: Eigenst{\"a}ndig lernen und effektiv {\"u}ben},
  edition   = {6th ed.},
  publisher = {Springer Vieweg},
  address   = {Wiesbaden},
  isbn      = {978-3-658-30650-2 (E-Book)},
  doi       = {10.1007/978-3-658-30650-2},
  pages     = {Online-Ressource (XI, 296 S. 300 Abb., 81 Abb. in Farbe)},
  year      = {2020},
  language  = {de}
}
@book{LabischWaehlisch2017,
  author    = {Labisch, Susanna and W{\"a}hlisch, Georg},
  title     = {Technisches Zeichnen: Eigenst{\"a}ndig lernen und effektiv {\"u}ben},
  edition   = {5. Aufl.},
  publisher = {Springer Fachmedien},
  address   = {Wiesbaden},
  isbn      = {978-3-658-18313-4},
  doi       = {10.1007/978-3-658-18313-4},
  pages     = {XI, 300 S. 291 Abb., 50 Abb. in Farbe},
  year      = {2017},
  language  = {de}
}
@book{Lassonczyk1987,
  author    = {Lassonczyk, Beate},
  title     = {Immobilisierung l{\"o}slicher organischer Stoffe aus Auflagehorizonten in Sandb{\"o}den},
  address   = {Bonn},
  pages     = {140 S. : graph. Darst.},
  year      = {1987},
  language  = {de}
}
@book{Lassonczyk1988,
  author    = {Lassonczyk, Beate},
  title     = {Verbreitung, Genese und Standorteigenschaften von B{\"o}den im Algarve / Jahn, Reinhold , K. Stahr und B. Lassonczyk (Hrsg.)},
  publisher = {Techn. Univ., Univ.-Bibliothek, Abt. Publ.},
  address   = {Berlin},
  isbn      = {3-7983-1237-0},
  pages     = {VI, 177 S. : Ill., graph. Darst.},
  year      = {1988},
  language  = {de}
}