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1by Gilliland, KirbySubjects: “...Shift systems....”
Published 1997
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2Published 1998Subjects: “...Shift systems Physiological aspects....”
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3by Sanders, Donald C.Subjects: “...Shift systems Physiological aspects....”
Published 1998
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4by Simpson, Lena P.Subjects: “...Shift systems United States Bibliography....”
Published 1981
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5by Cruz, Crystal E.Subjects: “...Shift systems United States Physiological aspects....”
Published 1995
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6Published 1999Subjects: “...Shift systems United States Physiological aspects....”
Government Document Microform Book