Suggest an edit10:02Modern Mathematics: Programme 16: Algebraic Structure: SubgroupsBBC One Wed 24th Jun 1964, 10:02 on BBC One LondonPresented by Douglas Quadling.For SchoolsRepeated on Friday at 9.40 a.m.(to 10.22)ContributorsPresenter:Douglas QuadlingDirector:Edward GoldwynEditor:Norman Hyland Source: Radio Times Suggest an edit