Animal testing Archival research Behavior epigenetics Case study Content analysis Experiments Human subject research Interviews Neuroimaging Observation Psychophysics Qualitative research Quantitative research Self-report inventory Statistical surveys. On Pauli's death in , his widow, Franca, deliberately destroyed all the letters von Franz had sent to her husband, and which he had kept locked inside his writing desk. Zeit des Erwachens: Das Buch zum Film. History Philosophy Portal Psychologist. Retrieved 7 March
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