1. CO2 evolution during the last millennium as recorded by Antarctic and Greenland ice;Barnola;Tellus,1995
2. The interpretation of anthropogenic indicators in pollen diagrams;Behre;Pollen et Spores,1981
3. Landschappelijk Nederland. Fysische geografie van Nederland;Berendse,1997
4. Geschiedenis van de landbouw in Nederland 1500–1950;Bieleman,1992
5. Armies of Pestilence;Bray,1996