美国疾控-CDC

美国疾控-CDC : http://www.cdc.gov/,,,0.0.0.0 111848,229,美国专利商标局: http://www.uspto.gov/,,,0.0.0.0 111849,229,美国国家标准化组织: http://www.ansi.org/,,,0.0.0.0 111850,229,美国电气电子工程师协会: http://www.ieee.org/portal/site,,,0.0.0.0 111851,229,美国：健康和人类服务部: http://www.hhs.gov/,,,0.0.0.0 111852,229,美国：毒品强制执法管理局: http://www.usdoj.gov/dea/index.htm,,,0.0.0.0 111853,229,食品安全和应用营养联合研究所: http://www.jifsan.umd.edu/,,,0.0.0.0 111854,229,"