books.google.co.jp - English describes the development of a uniquely Canadian selection system that attempted to match the aptitudes of aircrew candidates to the duties they would perform and the evolution of the RCAF's training program from a haphazard system with enormous attrition to one that became the model for many...http://books.google.co.jp/books/about/Cream_of_the_Crop.html?hl=ja&id=FcGov3199u4C&utm_source=gb-gplus-shareCream of the Crop
