Paul A. Struck, New York. 1947. 118, (2) pages. 4to (29,5 x 25 cm). Printed card boards. Corners bumped, parts of the spine missing. Interior clean & tight. Profusely illustrated with the works of Imre Reiner, printed in two colours, black & red.
”In the present volume I have collected the result of my experiments and shown one and the same problem with several solutions, without giving any of them the preference, being chiefly interested in pointing out the way in which such tasks may be approached.”