Human Hair Studies: General Considerations of Hair Individualization and Its Forensic Importance November 1940 in “ Journal of Criminal Law and Criminology (1931-1951) ” Paul L. Kirk We don't know much about this study yet. We're maintaining the world's largest resposity of hair loss research. You can help out the community by sending a PDF of this study here . Not sure how to get a study's PDF? You can email the authors of the study. View this study on scholarlycommons.law.northwestern.edu →