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Science 7 March 1997:
Vol. 275. no. 5305, pp. 1414 - 0
DOI: 10.1126/science.275.5305.1414b
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News & Comment

Andrew Lawler

HOUSTON--NASA and the National Science Foundation are weighing new rules that would severely restrict investigators who want to parcel out their samples of the 12 known martian meteorites. The problem, says a new report, is simple: The more hands, the more chance of contamination.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)