They Write Their Own Sentences: The FBI Handwriting Analysis Manual - Tapa blanda

Everything put down on paper creates a unique image that can be traced, analyzed and reconstructed, revealing evidence unseen by the naked eye. FBI labs specialize in the study of handwriting, typewriting, rubber stamps, seals, printing methods, obliterations, alterations and charred paper. This manual reveals the methods used to follow the elusive paper trail, drawing on FBI case files.