- Karl Imhoff's Handbook of Urban Drainage and Wastewater Disposal by Klaus R. Imhoff, Meint Olthof, et all 1989-05
- Planning Cities for the Future: The Successes And Failures of Urban Economic Strategies in Europe. by Peter Karl Kresl, 2007-03-07
- North American Cities and the Global Economy: Challenges and Opportunities (Urban Affairs Annual Reviews)
- Spring wildflowers of the Blue Mountains by Karl A Urban, 1972
- A Partial Checklist of the Vascular Plants of Steens Mountain, Harney County, Oregon 1979 by Karl Urban, 1980
- A Partial Checklist of the Vascular Plants of Steens Mountain, Harney County, Oregon by Karl Urban, 1985
- Common plants of the Craters of the Moon National Monument by Karl A Urban, 1971
- A Partial Checklist of the Vascular Plants of Steens Mountain, Harney County, Oregon 1980 by Karl Urban, 1980
- Checklist 1978: Vascular Plants of Steens Mountain Harney County Oregon by Karl Urban, 1978
- A Partial Checklist of the Vascular Plants of Steens Mountain, Harney County, Oregon (1981 Revision) by Karl Urban, 1985
- The Urban Response To Internationalization by Peter Karl Kresl, Earl H. Fry, 2005-09-01
- In praise of ordinary choices.(urban history): An article from: The American Enterprise by Karl Zinsmeister, 2006-06-01
- The Urban Economy and Regional Trade Liberalization by Peter Karl Kresl, 1992-06-30
- From rubble to restoration: Sustainable habitats through urban agriculture by Karl Linn, 1991
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