Eric Walker placed Electrical network frequency analysis (ENF) under Electric power

Eric Walker added "ENF Analysis" to Electrical network frequency analysis (ENF)

Eric Walker placed Electrical network frequency analysis (ENF) under Forensics

Eric Walker added The queen of crime-solving | Forensic science | The Guardian to Forensics

Eric Walker removed Forensic geneology from Crime and law enforcement

Eric Walker placed Forensic geneology under Forensics

Eric Walker added Forensics to Crime and law enforcement