1. John Hart born 1965 wrote Down river and King of Lies
2. John Hart (b. 1948) wrote Walking Softly in the Wilderness.
3. Hart, John Patrick wrote 50 Portrait Lighting Techniques for Pictures That Sell.
4. Hart, John 1943- wrote Spirit of the Earth.
5. Hart, John M. (John Mason) 1935- wrote Modern Small Boat Sailing.
6. Hart, John 1953 Dec. 27- wrote Jizz.
7. Hart, John 1942 Oct. 3- wrote Stories of Gay and Lesbian Immigration: Together Forever?.
8. Hart, John C. wrote ACM Transactions on Graphics: Proceedings of ACM SIGGRAPH 2003
9. Hart, John 1921 July 4- wrote Royal Ballet in Performance.
10. Hart, John 1936- wrote Herodotus and Greek History.
11. Hart, John 1957- wrote Neural Basis of Semantic Memory.
12. Hart, John d. 1574 wrote Works on English. orthography and pronunciation; 1551, 1569, 1570.
13. These two books are in Maori so reasonable to conclude that they are by the same John Hart.
Combination issues. This author has combination issues that need to be cleared up.