What has the author Hans-Jochen Gamm written?

Hans-Jochen Gamm has written:

'Die Mecklenburger' -- subject(s): Dialects, German National characteristics, German language, Social life and customs

'Das Judentum' -- subject(s): Antisemitism, Ethnic relations, History, Jews, Judaism

'Standhalten im Dasein'

'Streitfragen der Bildungspolitik' -- subject(s): Church and education, Education and state