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harvey greener joined the group FOBISIA 5 years, 9 months ago
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harvey greener joined the group Robotics 5 years, 9 months ago
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harvey greener joined the group Thailand Schools 5 years, 9 months ago
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harvey greener joined the group IB Computer Science Teachers 5 years, 9 months ago
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harvey greener became a registered member 5 years, 9 months ago