| Institute_of_Studies_on_Mediterranean_Societies Historical and economic research on Mediterranean societies, based in Napoli, Italy. |
| Nematodes_as_Biological_Control_Agents_of_Insects Information on how entomopathogenic nematodes can be used to control insect pests, and the taxonomy and systematics of these nematodes. |
| Econometric_Society International society dedicated to advancing research in theoretical and quantitative economics. |
| Pacific_Tech_Graphing_Calculator Symbolic and numeric methods for visualizing two and three dimensional mathematical objects. Supports differential equations and integration. Available for Macintosh and Windows. |
| The_Organic_Center Peer-reviewed scientific studies on the benefits of organic farming. |
| Lepidopterological_Society_of_Denmark Showcases news, articles, observations, protected species list and links. Located in Copenhagen. |
| Adhesives_and_Sealants__com Daily news and product updates for professionals in the adhesives and sealants industry. Information on manufacturing, technology, equipment, supplies, discussion forums, chat, newsletter and software |
| Geographic_Resources_Analysis_Support_System_Geographical_Information_System_(GRASS_GIS) An open source, free Geographical Information System (GIS) with raster, topological vector, image processing, and visualization functionality. Software and documentation downloads, Wiki, and newslette |
| Glomeromycota Information from Wikipedia on this phylum from the kingdom Fungi, members of which form arbuscules on the roots of plants. |
| Chemical_data_tables Data for General, Organic and Physical Chemistry, including NMR tables. |
| How_to_Buy_a_Telescope Basics, tips, and accessories with suggested reading and articles. |
| Volcanoes_and_Volcanism Includes explanations of volcanology terms, along with eruption updates and pictures. |
| Altitude_Profiles_of_Mountains Altitude profiles of famous and unknown climbs. |
| Natural_Regeneration_Using_Seed_Trees Describes the process of seed tree regeneration where, at harvest, a number of individual trees are left across an area to provide seed for the production of the next crop of trees. |
| Women_in_Astronomy,_1880-1920 Biographical information of Cecilia Payne-Gaposchkin and other Harvard women. Includes photographs and links. |
| Biodiversity_Heritage_Library Ongoing project sponsored by ten natural history museum libraries, botanical libraries, and research institutions. Digitized biology texts, journals, and guides. |
| Geometrics_Inc_ Manufacturer of geophysical instruments for subsurface investigation. |
| Rain_City_Rocks Web-based rock and mineral retail shop. Offers rock and mineral items ranging from 21 pound smoke quartz crystals to rough rock for tumbling. |
| The_Pander_Society An international association of palaeontologists and stratigraphers with a common interest in the study of conodonts. |
| NuclearSpace The goal is to promote the use of nuclear power in space and to further enhance the manned exploration of our solar system. |
