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Ritchie Andre B : Groundwater-level change for the periods 2002-8, 2008-12, and 2008-16 in the Santa Fe group aquifer system in the Albuquerque area, central New Mexico / by Andre B. Ritchie, Amy E. Galanter and Lucas T.S. Curry.
Ritchie Andy : Lake Ozette sockeye limiting factors analysis / prepared by Mike Haggerty; with contributions from Andy Ritchie ... [and others]; prepared for the Makah Indian Tribe and NOAA Fisheries, in cooperation with the Lake Ozette Sockeye Steering Committee.
Ritchie Carole A : Proceedings of the Second Eastern Native Grass Symposium held in Baltimore, Maryland, November 17-19, 1999 / technical edits by Jerry C. Ritchie, John A. Dickerson, Carole A. Ritchie ; edits and front cover design by Lina Undayag ; hosted by USDA Natural Resources Conservation Service ... [and others].