Free search and pay-per-view
Amazon Search Inside the Book
28 Jul 04
Fulltext search option provided by Amazon Books. Free registration gives you access to the fulltext of the document (that is, if the publisher of the document has given permission for this to Amazon).
More information about this service can be found in the list of Frequently Asked Questions. Comment: t oo little focus on watsan yet, but worth to keep track of in the near future.
DOAJ, directory of open access journals
28 Jul 04
The directory covers all open-access scientific journals that use an “appropriate”quality control system. Open-access means that they are free available on the Internet.
Examples: Journal of Water and Environment Technology; Water SA; Bulletin of the World Health Organization; Asian Development Review
Comment: t oo little focus on watsan yet, but worth to keep track of in the near future.
Ingenta
06 Apr 05
About 16 million articles from 28 thousand publications.
Search across a collection of multi-disciplinary academic and professional publications, e.g. Waterlines. Formerly Ingenta.com and IngentaSelect
Scirus
28 Jul 04
Science-specific search engine, focusing only on web pages containing scientific , scholarly, technical and medical data. Scirus includes Elsevier's Science Direct, and Medline.
