Cervellati, Matteo (contributor); Sunde, Uwe (contributor) - 2007
small
fraction of the population. General and scientiflc knowledge already reached remarkable levels
long before the … unskilled, lacked even elementary education and basic knowledge of hygiene and sanitation,
and displayed large fertility.4 In …,
despite the worldwide availability of advanced knowledge.
5In section 5.4 we show that similar patterns concerning the share …