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4Published 1989Subjects: “...Shift systems....”
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5by Weisman, Carol SachsSubjects: “...Shift systems....”
Published 1989
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6Published 1990Subjects: “...Shift systems....”
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7Published 1991Subjects: “...Shift systems Law and legislation....”
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8Published 1983Subjects: “...Shift systems United States Physiological aspects....”
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9Published 1984Subjects: “...Shift systems United States Physiological aspects....”
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13Published 1985Subjects: “...Shift systems....”
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14Published 1981Subjects: “...Shift systems United States....”
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17Published 1981Subjects: “...Shift systems Congresses....”
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18by Schroeder, David J.Subjects: “...Shift systems Bibliography....”
Published 1983
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