给大家两个好的免费资源

给大家两个好的免费资源
转自诺贝尔论坛www.i-nobel.com
给大家介绍一个网站，可以输入分子式，查到与你的结构类似的所有化合物

，免费，实用
Find Suppliers and Information for over 7 Million Chemicals
http://www.emolecules.com/
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全球学位论文库， 不需要账户密码，随时可以用
OAIster currently provides access to 13,397,122 records from 888

contributors.
OAIster is a union catalog of digital resources. We provide access

to these digital resources by \"harvesting\" their descriptive

metadata (records) using OAI-PMH (the Open Archives Initiative

Protocol for Metadata Harvesting).
http://www.oaister.org/

liangwei0408

好贴,
楼主辛苦了