American University of Beirut
<http://people.aub.edu.lb/~webfea/courses>
Dr. Barbara D. George's Online Instructional
Site: Xeriscaping and Composting
<http://www.bdgonline.com/corselst.htm>
ET Online Environmental Courses
<http://www.et-online.org/et_courses.html>
Occupational Training: Landfill Operations
& Composting Operations
<http://www.otrain.com/online/onlincoursinfo.html> | 
