Number | Name | Date | Kind |
---|---|---|---|
3753296 | van Steenwyk | Aug 1973 | |
4399692 | Hulsing, II et al. | Aug 1983 | |
4682421 | van Dongen et al. | Jul 1987 | |
4709486 | Walters | Dec 1987 |
Number | Date | Country |
---|---|---|
2122751 | Jan 1984 | GBX |
Entry |
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Deo et al. "An Analysis of the Angles of Rotation and Azimuth using M.W.D", Gearhart Geodata Service Ltd. prior to Jun., 1988. |