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H. W. Gabriel
H. W. Gabriel was a management-consultant, business writer and advisor on technical subjects. Over a twenty-year period, he gradually built up facts, statistics and psychological m...voir plusH. W. Gabriel was a management-consultant, business writer and advisor on technical subjects. Over a twenty-year period, he gradually built up facts, statistics and psychological motivators, together with over 11,000 Case-Histories of success from which emerged a pattern of key facts, that underlie his famous 20-Step System. Mr. Gabriel became nationally known as an authority on the phenomenon of success, publishing many books and articles.voir moins