@book{ Solr-023201312, title = {Grundlagen und Didaktik der Sexualerziehung}, author = {Ewers, Michael}, address = {Frankfurt/Main}, publisher = {Haag u. Herchen}, year = {1977}, note = {Literaturverz. S. 92 - 99}, url = {http://d-nb.info/790139839/04} }