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 Joseph S. Thorpe
 
 Swartz, Jon D.; Lara Tapia, Luis; Thorpe, Joseph S. (1967): Perceptual development of mexican school children as measured by responses to the Holtzman Inkblot Techinique [Perceptual development of mexican school children as measured by responses to the Holtzman Inkblot Techinique]. R. interam. Psicol. 1(4), 289-295 (eng.).