发行时间：0001.01.01
总页数：63
编辑：
综保科技
摘要：
united states government accountability office
report to the chairman, committee on science, space, and technology, house of representatives
3d printing
opportunities, challenges, and policy implications of additive manufacturing
highlights of a forum
convened by the comptroller general of the united states
june 2015 gao-15-505sp
cover art source: gao (artwork), which incorporates materials from oak ridge national laboratory (photo), and dr. l. e. murr, university of texas at el pa...
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