Piet Hartstra
Netherlands (NED)
| Schaatscircuit.nl | Heerenveen (NED) | 7 December 2011 | ||||||||||||||||
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| Schaatscircuit.nl | Heerenveen (NED) | 25 November 2011 | ||||||||||||||||
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| Clubwedstrijd Bergen/Schoorl/Zwanenwater | Alkmaar (NED) | 19 November 2011 | ||||||||||||||||
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| Clubwedstrijd Bergen - Schoorl | Heerenveen (NED) | 18 November 2011 | ||||||||||||||||
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| Schaatscircuit.nl | Heerenveen (NED) | 12 November 2011 | ||||||||||||||||
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| Baancommissiewedstrijd | Alkmaar (NED) | 6 November 2011 | ||||||||||||||||
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| Clubwedstrijd BGN-ZW-SCH | Alkmaar (NED) | 23 October 2011 | ||||||||||||||||
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| Fourth Masters Heerenveen International Sprint | Heerenveen (NED) | 22 - 23 March 2011 | ||||||||||||||||
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| Clubwedstrijd Bergen - Schoorl - Zwanenwater | Alkmaar (NED) | 26 February 2011 | ||||||||||||||||
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| Schaatscircuit.nl | Heerenveen (NED) | 16 February 2011 | ||||||||||||||||
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Native Language Names