books.google.co.ukhttp://books.google.co.uk/books/about/The_Geology_of_the_Fenland.html?id=DXYKAAAAMAAJ&utm_source=gb-gplus-shareThe Geology of the Fenland
JSTOR: Interrelations of the Fossil Fuels. I 400; sbj Skertchly, "The Geology of the Fenland," Mem. Geol. Surv. 'of Great Britain, I877. 18 J. Lorie, " Les hautes tourbieres au nord du Rhin," Arch. Mus ... links.jstor.org/ sici?sici=0003-049X(1916)55%3A2%3C21%3AIOTFFI%3E2.0.CO%3B2-O