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- 03:09, 25 May 2018 diff hist -26 m Stephen W Hurrell Birth date corrected current
- 02:50, 25 May 2018 diff hist +4 Dinosaurs and the Expanding Earth - Third edition Correct minor typos current
- 02:37, 25 May 2018 diff hist -12 m Stephen W Hurrell Now retired from engineering design