id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cpos-369	Rees, Philip ; Lomax, Nik 	Ravenstein Revisited: The Analysis of Migration, Then and Now	2020	63	.pdf	application/pdf	26551	1272	53	Courgeau’s paper fi rst identifi ed the clear distinction Tab. 7: Estimates of country to country migration fl ows Notes: M = long-term migration using the UN 12-month duration definition. Azose and Raftery (2018b) use CIRCOS based plots to demonstrate the differences between their estimates of country to country migration fl ows and those of Abel and Sander (2014).	cache/cpos-369.pdf	txt/cpos-369.txt