Introduction to lattice theory [by] D.E. Rutherford. Rutherford, D. E. (Daniel Edwin), 1906- Lattice theory. QA171.5 .R8 512.865 RUI "Based upon courses of lectures given in the University of St. Andrews and in the University of Notre Dame, Indiana." New York, Hafner Pub. Co. 1965 1965 1965 Text x, 117 p. eng University mathematical monographs