Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "Hardiman, N. J. and Bradburn, Mary and Langford, W. J. and Maxwell, E. A. and Plumpton, C. (Charles)","Exploring university mathematics 3 : lectures given at Bedford College, London",,Pergamon Press,1969,"The commonwealth and international library of science, technology, engineering and liberal studies",,,,https://cir.nii.ac.jp/crid/1130859128710584580