1
by Ponting, Herbert G.
Published 1999
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2
Published 2004
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3
Published 1993
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5
Published 1993
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6
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8
by Draf, W.
Published 1990
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9
by Draf, W.
Published 1987
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10
Published 1997
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11
13
14
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15
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16
Published 1993
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17
Published 1993
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18
Published 1993
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19
Published 1992
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20
Published 1993
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