Check out the fantastic MapRef site for information on coordinate systems, projections and much more...
28 September 2007
MapRef supports a fundamental step towards Interoperability of Geographic Information processing: Using Coordinate Reference Systems (CRS) within the Spatial Data Infrastructure (SDI).
MapRef is designed as a collection of paneuropean and national map projections and geodetic reference systems in Europe, used for mapping and building up coordinate reference frames.
[National Mapping Agencies in Africa]

original site [checked 9.1.12], screenshot

"I visited your website and found it interesting piece of work. About the presentation of the site, it has been developed and delivered with a very beautiful approach." A.R., 13.12.2002

"Thank you for this great page. A very helpful knowledge base." R.T: 12.02.2003

in [Annoni et al 2003], p. 7