A database of mammalian taxonomy. It is hoped that this database on the World Wide Web can be used as a convenient on-line reference for identifying or verifying recognized scientific names and for taxonomic research. The names are organized in a hierarchy that includes Order, Suborder, Family, Subfamily, Genus, Species and Subspecies.

Instructional Materials Thesaurus for the subjects of Biology of the high school level Spanish education system (17-18 years).

Thematic terms for categorizing information resources. This thesaurus is intended to support finding and understanding scientific information.

Freely available for online viewing and searching

Interface in English but Spanish and Portuguese translations of words included. Free thesaurus for searching a proprietary database.

Will be translated into more languages. "The complete thesaurus, or any substantial part of the thesaurus, may not be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise without the permission of the copyright holder."

The thesaurus was initially based on the UNESCO Thesaurus (ISBN: 92-3-101469-2) and is continuously expanded and updated by the UK Data Archive. HASSET may be used by other organisations, for example to index materials, provided it is for non-commercial purposes and appropriate acknowledgement is given. A licence form allowing you to use or adapt HASSET in your own organisation can be requested from info@data-archive.ac.uk.