Renewable
gfa-group.de
The GFA Consulting Group, based in Hamburg, has a sound track record of implementing complex studies and projects in over 130 countries since 1982.
596,105 
$ 1,920.00
eolss.net
This is the largest online encyclopedia, virtual dynamic library equivalent to about 600 volumes. It is an integrated compendium of 21 component encyclopedias.
95,332 $ 141,120.00