What has the author Oscar Helmuth Werner written?

Oscar Helmuth Werner has written:

'The scholastic persistence of 2,140 unclassified students in the University of Nebraska' -- subject(s): Students, University of Nebraska (Lincoln campus)

'Every college student's problems' -- subject(s): Students, Study skills, Conduct of life

'The unmarried mother in German literature' -- subject(s): Illegitimacy, German literature, History and criticism