You requested books by authors starting with "Williams, Edward R.", and with titles starting with "state of the system (SOS) model : measuring growth limitations using ecological concepts". (Exclude extended shelves)
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Williams, Edward R.: The state of the system (SOS) model : measuring growth limitations using ecological concepts (Washington, D.C. : U.S. Environmental Protection Agency, Office of Research and Development, 1974., 1974), also by Peter House and United States. Environmental Protection Agency. Office of Research and Development (page images at HathiTrust)1 item was found.
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