@book{62684,
	author = {Simmons, Alan B. and Diaz-Briquets, Sergio and Migration Review Task Force.},
	title = {Social change and internal migration :},
	publisher = {International Development Research Centre,},
	year = {c1977.},
	address = {Ottawa ;},
	note = {"A report of the Migration Review Task Force of the International Development Research Centre"}
}