Barlow, P. M. (2002). Concepts for national assessment of water availability and use. US Geological Survey circular 1223.
Chicago ZitierstilBarlow, Paul M. "Concepts for National Assessment of Water Availability and Use." US Geological Survey Circular 1223 2002.
MLA ZitierstilBarlow, Paul M. "Concepts for National Assessment of Water Availability and Use." US Geological Survey Circular 1223 2002.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.