Robert M. Langdon has written:
'American foreign policy'
M. Langdon has written: 'Active methods of learning for large classes in the junior school'
Robert M. Maciver has written: 'Society'
Robert M. Lampkins has written: 'Robert M. Lampkins, the contracting business'
Robert M. Counahan has written: 'Language alive!'
Robert M. Ball has written: 'Insuring the essentials'
Robert M. Duffy has written: 'Of sheep and girls'
Robert M. Coates has written: 'En femfemma'
Robert M. Taber has written: 'Faire L'Amour'
Robert M. Hammond has written: 'Creative French'
Robert M. Corless has written: 'Essential Maple 7'
Robert M. Donaldson has written: 'A guide to cardiac ultrasound'
Robert M. Lindner has written: 'Rebel without a cause-'