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			documents 
			Haukos, D. A., and L. M. Smith. 1994. The importance of playa 
			wetlands to biodiversity of the Southern High Plains. Landscape and 
			Urban Planning 28:83-98.
 Luo, H., L. M. Smith, B. L. Allen, and D. A Haukos. 1997. Effects of 
			sedimentation on playa wetland volume. Ecological Applications 
			7:247–252.
 
 Osterkamp, W. R., and W. W. Wood. 1987. Playa-lake basins on the 
			Southern High Plains of Texas and New Mexico, Part I. Hydrologic, 
			geomorphic, and geologic evidence of their development. Geological 
			Society of America Bulletin 99:215-223.
 
 Smith, L. M. 2003. Playas of the Great Plains. University of Texas 
			Press, Austin, Texas.
 
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