by K. Pruszynski ; with a foreword by Jack Lindsay. W.R. Smyser ; with a foreword by Paul Nitze. by R. Doswell ; with a foreword by John Beavis. by S. H. Steinberg ; with a foreword by Beatrice Warde. J. S. Rogers ; with a foreword by T. H. Laby. by Philip Burtt ; with a foreword by Frank Pick. by Howard Robertson ; with a foreword by Robert Atkinson. Luis A. Santalo ; with a foreword by Mark Kac. by Ethel Browning ; with a foreword by W. V. Mayneord. by Eugene F. Megyesy ; with a foreword by Paul Buthod.