UNITED-STATES RESEARCH RESTRICTIONS - POLICY ON HIGH-TECH DATA THREATENS FREEDOM

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作者：
DAVID, P
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NATURE | 1983年 / 306卷 / 5941期
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O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
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07 ; 0710 ; 09 ;
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页码：303 / 303
页数：1
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