1-4 of 4 Books

Fighting words
By Michael E. Brown,Sumit Ganguly
Politics of Multilingualism
Politics of Multilingualism
By Peter A. Kraus,François Grin

Language spread and language policy
By Georgetown University Round Table on Languages and Linguistics (1987)

Language Choice in Enlightenment Europe
By Vladislav Rjéoutski,Willem Frijhoff