1
by Downs, Philip G.
Published 1992
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2
Published 1992
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7
by Hecl, Rudolf
Published 2006
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Thesis Manuscript
9
11
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12
by Marek, Vlastimil, 1946-
Published 2003
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14
16
Published 2015
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17
by Cooke, Mervyn, 1963-
Published 2016
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18
Published 2001
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20