much as i'd liketo impress you with my vast knowledge of all things helium related, I have to admit I got that figure from a hot-air ballooning site.
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djol,
Mon 22 Sep 2003, 18:27,
archived)
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Message 2017419
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much as i'd like
djol,
Mon 22 Sep 2003, 18:27,
archived)
much as i'd like djol,
Mon 22 Sep 2003, 18:27,
archived)