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Wilson, John (1955–) John Wilson is one of geography's leading practitioners of geographical information systems (GIS), particularly in the context of environmental concerns. He is a professor of geography at the University of Southern California, where he chairs the department of geography, directs the geographic information science and technology graduate programs as well as the GIS research laboratory, and also holds adjunct appointments as professor in the departments of computer science and civil and environmental engineering. He received his PhD in geography from the University of Toronto, Canada, in 1986. He also holds an LLB honors law degree from the University of Canterbury, New Zealand. From 1992 to 1997, he was a professor of geography in the department of Earth sciences, an adjunct professor of soil science in the department of plant and soil science, and the ...