9787302533009-从发明到专利:科学家和工程师指南:a scientist and engineer's guide(R7)/ [美]史蒂文·H.沃尔德曼(Steven - Tapa blanda

 
9787302533009: 9787302533009-从发明到专利:科学家和工程师指南:a scientist and engineer's guide(R7)/ [美]史蒂文·H.沃尔德曼(Steven