Computers in Education, 1962.
MacMillan Co, London & NY, Pergamon Press, 1962, first edition; 122 pages, Index, references,
MacMillan Co, London & NY, Pergamon Press, 1962, first edition; 122 pages, Index, references,
US Dept Commerce, National Bureau of Standards, Wash., D.C., 1966; 256 pages, References, diagrams.
W H Freeman & Co, San Francisco, CA 1961, 14 pages, triple column text, photographs.