| Surface_Concept_GmbH Producer of delay line detectors. Provides products and services for electron detection, electron optics and ultra-high vacuum compatible sensors for surface analysis. |
| SVT_Associates_-_Complete_MBE Manufacturer of Ultra High Vacuum (UHV) and Molecular Beam Epitaxy (MBE) equipment. Also produces III-V epitaxial materials and devices, in-situ monitoring tools, and system deposition components. |
| Sypris_Test_&_Measurement Provider of on-site and mobile calibration services, test and evaluation services and electronic products under the F.W. Bell name including magnetic measurement instruments, current sensors and hall |
| Tantec_USA Manufacturer of surface treatment and analysis equipment and static electricity control equipment. |
| Tectra_Plasma_Sources Provides the Tectra Plasma Source, a multi-purpose source producing either atoms or ions and finds uses in a range of HV and UHV applications. |
| Teledyne_Hastings_Instruments Manufacturer of vacuum and flow instruments for the measurement and control of vacuum and gas flows. |
| UHV_Design Manufacturer or vacuum components for molecular beam epitaxy (MBE), UHV sputtering, vacuum thin films and other UHV vacuum deposition components. |
| Vacutec Produces hemispherical energy analysers, electron, X ray, ion sources, and sample transfer. Includes list and description of products. |
| Vacuum_Controllers,_From_Hastings_Instruments Hastings Instruments manufactures a complete line of Vacuum Instruments including Vacuum Controllers, for the precise measurement and control of vacuum and gas flows. |
| Vatell_Corporation Produces a line of HFM heat flux microsensors and circular foil heat flux gages. |
| VME_for_Physics_and_Industrie Provides process control, supervisory data acquisition systems and VME scalers and counters. |
| Vorg_Electronics Manufacturer of electronic transformers for halogen lamps, photomultiplier tube bases, cables, electronic transformers, PMT bases, PMT Arrays, transformers, and custom built electronics |
| Voss_Scientific Provides data acquisition and analysis, PC-based satellite telemetry, high-power microwave (HPM) sources, and computational electromagnetic products. |
| Walker_LDJ_Scientific,_Inc_ Manufacturer of magnetic measurement and analysis equipment. In addition, the company manufactures power supplies, laboratory electromagnets, and helmholtz coils. |
| WITec_GmbH Manufacturer of equipment for scientific and industrial applications focused on new solutions for Optical and Scanning Probe Microscopy. |
| X-ray_3-dimensional_Non-destructive_Microscopy Developer and producer of microtomography (Micro-CT) system for non-destructive 3-dimensional microscopy inside opaque objects. |
| X-TRONIX_Scientific_and_Industrial_Technologies Provides equipment for vacuum techniques, including consumables, thin films and surface science, gas flow control, helium cryogenics, and particle physics. |
| Air_Pollution,_Lichens_and_Mosses Brief article. |
| Arizona_State_University_Lichen_Herbarium Information about the collection, the Sonoran Desert Lichen Flora Project, research, and online course material. |
| British_Lichen_Society Advance interest in all branches of lichenology. Includes comprehensive information on British lichens. |
| Churchyard_Lichens General information. |
| Dutch_Lichens Photos and information about lichen biology. In Dutch and English. |
| Endangered_Lichens List of species protected by law in different countries. |
| European_Species_of_the_Lecanoraceae_Family Information on monograph. |
| Information_about_Lichens Description, structure, and environmental importance. |
| Introduction_to_Lichens Information about lichens including fossil record, life history, ecology, morphology and systematics. |
| Invasion_of_Pollution-tolerant_Lichens Research on the distribution of four pollution-tolerant non-native lichens in the Pacific Northwest. |
| Lichen_Biology Introduction to lichens, which are stable, self-supporting associations between fungi (most commonly Ascomycota) and photobionts (algae or cyanobacteria). Intended for university students. |
| Lichen_Research_Program,_University_of_Maine_at_Fort_Kent Information about Steve Selva's research program in lichenology. Includes a photo gallery of stubble lichens under the microscope. |
| LichenLand General information for young students including synoptic key and photos. |
| Lichenology_in_the_Netherlands Red list including lichenicolous fungi, and additional information about projects and publications. |
| Lichens_-_Silent_Witnesses_of_Air_Quality Information on monitoring air quality, bibliography, and photos. |
| Lichens_of_North_America Information about lichen biology, lichens and wildlife, lichens and people, and the book of the same title, which was published in 2001. |
| Lichens_de Photos of lichens taken during British Lichen Society field trips in Britain. Contains general information and related links. |
| New_Zealand_Forest_Lichens Photographs, general information, identification and related links. |
| North_American_Lichen_Checklist List of cumulative updates to the most recently published North American checklist by Esslinger and Egan (1995). |
| Queensland_Lichens General information on subtropical lichens from Queensland, Australia. Includes keys to genera and species, and glossary. |
| Rhode_Island\'s_Foliose_and_Fruticose_Lichens Habitat notes, distribution maps, and color photographs of over 90 species of macrolichens by Don Flenniken. |
| Roccella Lichen genus found in Venezuela. |
| Taxonomy_of_Philippine_Lichens Brief information and links by researcher Isidro T. Savillo. |
