TY  - BOOK
AU  - otto,  Paul 
AU  -  Berthier-Foglar,  Susanne
TI  - Permeable Borders: History, Theory, Policy, and Practice in the United States
SN  - 9781789204438
PB  - Walter de Gruyter
KW  - History
UR  - http://www.degruyter.com/isbn/9781789204438
ER  -