@book{57450,
	author = {Wiet, Gaston and  Vadime Elisseeff,},
	title = {history of mankind cultural and scientific development},
	publisher = {George allen and unwin limited},
	year = {1975},
	address = {London},
	note = {this book covering the historical background from the fifth to eleventh centuries, including the migrations of peoples in Eurasia.}
}