Border security – Illegal immigration issues in Europe, U.S. - Washington Post
Borders / Barriers - Art Papers
Article: Borders and Walls: Do Barriers Deter Unau.. | migrationpolicy.org
Invisible Borders: Administrative Barriers and Citizenship in the Italian Municipalities (Palgrave Politics of Identity and Citizenship Series): Gargiulo, Enrico: 9783030538354: Amazon.com: Books
Borders without Barriers: Facilitating Trade in SASEC Countries: Abdou, Marwa, Butiong, Ronald, Kumar, Utsav, Shepherd, Ben: 9789292618681: Amazon.com: Books
A world divided: mapping border fences globally | News | Archinect
Photos: Built to Separate—Border Barriers Around the World - The Atlantic