سعود ليلى رجاء الرويلى

     http://www.pisces-conservation.com/

STELLA II

     http://www.iseesystems.com/index.aspx

     http://serc.carleton.edu/introgeo/mathstatmodels/UsingStellaII.html

     http://www.mapcruzin.com/free_gis.htm

Erdas Imagine

     http://www.erdas.com/ERDASredirect/index2.html

     http://www.gisclub.net/vb/showthread.php?t=1104

BIODIVERSITY

     http://www.district196.org/ses/hse/g12/plotkin.html

     http://www.miljolare.no/virtue/biodiversity/biodiversity_index.php

     http://www.irchouse.demon.co.uk/