1
Published 1980
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2
Published 1999
3
Published 2003
4
Published 1999
5
Published 1999
6
7
8
Published 2003
9
Published 2003
10
Published 1993
11
Published 1995
12
Published 1992
13
Published 1987
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14
Published 1992
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15
Published 1992
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16
Published 1987
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17
18
Published 1994
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19
Published 1985
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20
Published 1993
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