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1by Gilliland, KirbySubjects: “...Shift systems....”
Published 1997
Government Document Microform Book -
2by Simpson, Lena P.Subjects: “...Shift systems United States Bibliography....”
Published 1981
Government Document Book -
3by Cruz, Crystal E.Subjects: “...Shift systems United States Physiological aspects....”
Published 1995
Government Document Microform Book -
4Published 1999Subjects: “...Shift systems United States Physiological aspects....”
Government Document Microform Book