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possible theories of the phenomenon. To the extent that recovered samples did not show an exotic composition or complex structure supporting their preconceived hypothesis, both sides of the extraterrestrial argument lost interest in the cases. In the view of the present author such lack of follow-up is unfortunate, because much could be learned from comparative analysis of such material even if it is mundane. Therefore our hope is that further field research may be stimulated by publication of the present survey.

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