TY - BOOK ID - 135967997 TI - Diffuse security threats : technologies for mail sanitization exist, but challenges remain PY - 2002 PB - Washington, D.C. DB - UniCat KW - Postal service KW - Security measures KW - United States Postal Service KW - Security measures. UR - https://www.unicat.be/uniCat?func=search&query=sysid:135967997 AB - ER -