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Andrew Turner
GIS Open Courseware - Penn State University - http://open.ems.psu.edu/coursew...
The "courseware modules" linked below represent substantial portions of the resources provided to students who register in participating Penn State classes. These resources are available for reuse by teachers and learners worldwide who do not intend to apply for admission, register for classes, or pursue a certificate or degree at Penn State. The resources are freely available for non-commercial use under a Creative Commons license. Please see the License section for more information. - Andrew Turner