@book {9783830989998, title = "Lern- und Entwicklungsplanung", isbn = "9783830989998", url = "http://www.content-select.com/index.php?id=bib_view&ean=9783830989998", url = "https://content-select.com/de/portal/media/view/5c868571-f6c0-4415-92d9-2fb3b0dd2d03", publisher = "Waxmann Verlag", }