Mexico, D.F. Universidad Nationcal Autónoma de México, Facultad de Filosopia y Letras, 1951. 168p., 7x4.5 inch wraps with cleric edges somewhat crumpled with tiny tears, previous owner's name on front wrap. Master's thesis done at the University. Author specifies discrimination and lynching, war, the wage system, and the technology myth as the "four" themes.