Edit. Penguin Books Ltd, 1963 England. Penguin Handbook. 8º (18x11cm) 190 págs. Rústica ilustrada en buen estado. Cubierta deslucida con roces y dobleces. Lomo soleado. Tostado. Leve fatiga. «Intelligence Quotient, as a useful means of measuring brain capacity, has come more and more into the public eye in recent years, and the run-away success of a television programme like Pencil and Paper, drawing some 14.000.000 viewers every week, proves how ready people are to put themselves to the intelligence test.»