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3 résultats pour : henry tracey coxwell

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Henry Tracey Coxwell's plan for a triple balloon to be used for Arctic exploration
ARP23A12_421

Henry Tracey Coxwell's plan for a triple balloon t...

Henry Tracey Coxwell's plan for a triple balloon to be used for Arctic exploration
ARP23A12_430

Henry Tracey Coxwell's plan for a triple balloon t...

Henry Tracey Coxwell's design for balloons to be used for Arctic exploration
ARP23A14_281

Henry Tracey Coxwell's design for balloons to be u...