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【作者(必填)】
none
【文题(必填)】Spending of U.S. pharmaceutical industry for research and development as a percentage of total revenues from 1990 to 2017
【年份(必填)】2018
【全文链接或数据库名称(选填)】https://www.statista.com/statistics/265100/us-pharmaceutical-industry-spending-on-research-and-development-since-1990/
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mynncs 查看完整内容
Spending of U.S. pharmaceutical industry for research and development as a percentage of total revenues from 1990 to 2017
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