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Published: 1990
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5
Published: 1994
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7
by Lindblom, Charles E.
Published: [1995]
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8
Published: 2000
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9
by Vida István (1940-)
Published: 1986
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10
11
by Dénes Iván Zoltán (1946-)
Published: 1988
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12
by Wiatr, Jerzy J.
Published: 1980
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13
14
15
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18
by Sartori, Giovanni (1924-)
Published: 1999
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19
20
Published: 1997
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