Background to set and group theory; including applications in the teaching of mathematics / D.E. Mansfield [and] H. Bruckheimer. With a foreword by W.H. Cockcroft. Mansfield, D. E. (Donald Ernest) Bruckheimer, M. (Maxim), joint author. Set theory. Group theory. QA248 .M279 1965 512.86 MAB Errata slip mounted on p. 7. Includes index London, Chatto and Windus, 1965. 1965. 1965 Text 252 p. : eng