Part,  Chapter, Paragraph

1    I,     2.  7    |      single city; in Europe, South-East England has the same effect.
2   II,     5. 11.  3| reasons for this North- West/South-East gradient are unclear.~Prevalence
3  III,    10.  4.  2| Hallandsasen, a ridge in the South-east of Sweden where a tunnel