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6Published 2009“...Sage,...”
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12Published 1977“...SAGE Publications,...”
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13Published 1998“...Sage Publications,...”
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14Published 1994“...SAGE Publications,...”
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15Published 1996“...Sage Publications,...”
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17Published 1995“...Sage Publications in association with the Open University,...”
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18Published 1997“...Sage Publications in association with the Open University,...”
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