1
2
Published 1980
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3
Published 1990
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Serial
6
Published 1994
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Serial
7
Published 1990
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8
Published 1981
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Serial
10
Published 2001
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14
by Dolbeare, Kenneth M., 1930-
Published 1996
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17
Published 1970
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18
by Villalta, Jorge Blanco
Published 1982
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19
by Renwick, Alan, 1975-, Swinburn, Ian
Published 1993
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