Goodrick-Clarke examines several pseudo-historic "books written about Nazi occultism between 1960 and 1975", that "were typically sensational and under-researched". He terms this genre "crypto-history", as its defining element and "final point of explanatory reference is an agent which has remained concealed to previous historians of National Socialism". Characteristic tendencies of this literature include: (1) "a complete ignorance of primary sources" and (2) the repetition of "inaccuracies and wild claims", without the attempt being made to confirm even "wholly spurious 'facts'". Books debunked in Appendix E of "The Occult Roots of Nazism" are: