מקורות

ע ו ב ד ת י ו ת 308 . 2016 4, Barro - Lee . Educational Attainment Dataset v 2 . 1 . Updated February See Barro and Lee ( 2013 ) . Accessed November 7, 2017 . http : / / www . barrolee . com . gapm . io / xbl17 . Barro, Robert J . , and Jong - Wha Lee . “ANew Data Set of Educational Attainment in the World, 1950 – 2010 . ” Journal of Development Economics 104 ( 2013 ) : 184 – 98 . BBC . Producer Farhana Haider . “How the Danish Jews escaped the Holocaust . ” Witness, BBC, Magazine, October 14, 2015 . gapm . io / xbbcesc17 . Berners - Lee, Tim . “The next web . ” Filmed February 2009 in Long Beach, CA . TEDvideo, 16 : 23 . gapm . io / x - tim - b - l - ted . https : / / www . ted . com / talks / tim_berners_lee_on_the_next_web . Betts, Alexander, and Paul Collier . Refuge : Rethinking Refugee Policy in a Changing World . New York : Oxford University Press, 2017 . Biraben, Jean - Noel . “An Essay Concerning Mankind’s Evolution . ” Population . Selected Papers . Table 2 . December 1980 . ...  אל הספר