Month: July 2009

A depression in the land surface that results from the collapse or slow settlement of underground voids produced by solution weathering. The rock being dissolved is normally limestone but can also be salt, gypsum or dolostone

There are three basic institutional options for organizing network access, such as access to the European electricity market: the single buyer procedure, the negotiated third-party access and the regulated third-party access (see also negotiated third party access and regulated third party access)