各类电子书搜索引擎

为了各位朋友查找电子书的方便，现汇集各类电子书搜索引擎如下。
我先把我搜集的公布一下，呵呵。
三个我最喜欢的综合性电子书搜索地址：
http://book.httpcn.com/search/
http://www.coopk.com/
http://www.pealy.com/
其它：
http://www.hotbot.com
http://ebooksclub.org/?module=index
http://scholar.google.com/
http://www.scirus.com/srsapp/
http://www.ojose.com/
http://citeseer.ist.psu.edu/
http://yagoohoogle.com/
http://www.search4science.com/
http://www.sciseek.com/
http://www.v.com.cn/Search/all-Search.asp
http://book.httpcn.com/search/
http://www.isoshu.com/indexcn.html
http://www.8hot.cn/
http://www.cnshare.org/index.php/2006/09/search-strings-to-find-free-ebooks/
http://www.tawtu.com
http://cris.siteburg.com/books.php
http://sou.joyes.com/heji/wuxiabook/
http://www.zhongguosou.com/free_ebook_download.html
http://www.fastgun.net/home.htm
http://www.52eshu.com/
http://www.pujiwang.com/
http://www.gy16.com/
http://www.77txt.com/
http://www.tawtu.com/l?cmd=1311&pn=570
http://www.go172.com/ebook.html
http://www.feiku.com/
http://www.dianzishu.net
http://www.ebookdown.net/
http://www.infotrieve.com/search/databases/newsearch.asp(检索2000万引文、1000万摘要)(部分免费)
http://www.scirus.com/科学信息搜索引擎Scirus (期刊文章、网页)
http://www.thescientificworld.com/生命、环境科学综合性资源TheScientificWorld (sciBASE)
http://www.altavista.com/
http://biome.ac.uk/browse/(BIOME生命科学资源导航)
http://www.chemie.de/search/?language=e(Chemie.de 化学搜索引擎)
http://www.emolecules.com/ (eMolucules,formerly Chmoogle, 可搜索化学结构的搜索引擎)
http://scholar.google.com/
http://infoseek.go.com/
http://www.northernlight.com/Northern Light
http://www.onelook.com/OneLook Dictionary Search (同时查询多种字典的字词定义或翻译为其他语种)(免费)
http://www.teoma.com/Teoma
http://www.wisenut.com/WiseNut
http://www.chemindustry.com/化学工业资源搜索引擎
http://www.chemindex.com/化学品搜索引擎(免费)
http://www.chemsoc.org/cgi-bin/fx.exe?DB=chemlinkms化学搜索引擎: 从Chemsoc搜索化学站点
http://citeseer.ist.psu.edu/计算机/网络论文搜索引擎ResearchIndex (CiteSeer)
http://www.mooter.com/聚类搜索引擎：Mooter
http://www.labhoo.com/实验室设备、产品、厂商目录LabHoo
http://www.excite.com/Excite
http://www.alltheweb.com/FAST Search
http://www.google.com/patentsGoogle检索专利引擎
http://ixquick.com/eng/ixquick: 同时检索多个搜索引擎
http://www.sciseek.com/SciSeek
http://www.xooda.com/Xooda 元搜索引擎
http://www.chemspy.com/化学数据库集成检索引擎ChemSpy.com
http://www.fiz-chemie.de/guides/化学搜索引擎ChemGuide
http://www.deja.com/corp/检索新闻组文章Deja News
http://nanospot.org/纳米技术搜索引擎Nanospot
http://www.abcam.com/Abcam Ltd. 有关抗体、试剂的销售，抗体的搜索)
http://search.asiaco.com/Asico: The Asia Search Engine
http://www.chemclub.com/ChemClub.Com
http://www.ohsu.edu/cliniweb/CliniWeb International
http://www.dogpile.com/Dogpile
http://ftpsearch.lycos.com/FTP Search
http://www.healthatoz.com/HealthAtoZ(免费)
http://www.lifesciencesworld.com/lifesciences (生命科学搜索引擎)
http://www.lycos.com/Lycos
http://www.mdchoice.com/MDchoice
http://www.medhelp.org/Med Help International (MedHelp)
http://www.medmatrix.org/reg/login.asp Medical Matrix(免费)
http://www.mwsearch.com/Medical world Search(免费)
http://www.opentext.com/Open Text
http://scansite.mit.edu/Scansite (蛋白质底物位点检索与预测工具)(免费)
http://www.webcrawler.com/WebCrawler
http://www.wwcomposites.com/World Wide Composites Engine (英特网复合材料搜索引擎)
http://www.metacrawler.com/index_metafind.html多引擎同时检索Metacrawler
http://shareware.cnet.com/检索共享软件:Search CNET Shareware
http://www.immuneweb.com/免疫学信息网(免费)
http://www.bioportfolio.co.uk/生物资源搜索引擎， BioPortfolio
http://www.polymer-search.com/橡胶塑料搜索引擎(PSI)