The source files in src/libvd have been developed under contract and can
be distributed and used only with this package. Refer to the README file
in that directory for more informations.

The rest of the code is free for non commercial use. Redistribution of this
package is allowed freely provided that the contents of the package are not
changed. The code can be modified and re-used but modified code can not be
redistributed without written consent of the author. Commercial use of any
portion of this package is not allowed without written consent of the
author.

Ferdinando Villa, Maryland International Institute of Ecological Economics
July 1997
Questions: villa@cbl.umces.edu 
