@book {9783818613501, title = "Heilpflanzenkraft gegen Viren", author = "Ritter, Claudia", isbn = "9783818613501", year = "2020", url = "http://www.content-select.com/index.php?id=bib_view&ean=9783818613501", url = "https://content-select.com/de/portal/media/view/5fff1b43-2f1c-49f8-978e-678cb0dd2d03", publisher = "Verlag Eugen Ulmer", language = "ger", }