【作者(必填)】HENRY GRABOWSKI and JOHN VERNON

【文题(必填)】Innovation and Structural Change in Pharmaceuticals and Biotechnology
【年份(必填)】1994 vol.3 issue 2

【全文链接或数据库名称(选填)】http://icc.oxfordjournals.org/content/3/2/435.full.pdf+html