Worldwide Science WorldWideScience.org对70多个国家的61个数据库及门户进行跨语言搜索,美国能源部和英国图书馆联合推出的全球科学信息门户 WorldWideScience.org | WorldWideScience
WHO World Health Organization (WHO)WHO's primary role is to direct international health within the United Nations' system and to lead partners in global health responses. The United Nations agency working to promote health, keep the world safe and serve the vulnerable.
全国报刊索引《全国报刊索引》创立于1955年,是上海图书馆(上海科学技术情报研究所)主管主办,收录数据最早可回溯至1833年,采用中国图书馆分类法进行分类揭示,收录文献总量5000余万篇,年更新数据逾500万条,汇集报刊数量逾50000种,全面涵盖社会科学、自然科学等各个领域。
维基百科 Wikipedia需要特殊路径访问 Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.