author: Phillip D. Stricker  Pim J. van Leeuwen 

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copyrighted in Trinidad and Tobago.

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copyrighted in countries which use the rule of the shorter term.

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copyrighted in countries with 71.5 years copyright term after publication.

copyrighted in countries with 25 years pma.

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copyrighted in countries with 85 years pma or shorter.

copyrighted in countries with 15 years pma or shorter.

copyrighted in countries with longer than 15 years pma.

copyrighted in countries with longer than 45 years pma.

copyrighted in countries with longer than 95 years pma.

copyrighted in countries with 74 years pma or shorter.

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copyrighted in countries with 60 years pma.

copyrighted in countries with 74 years pma.

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copyrighted in countries with 50 years copyright term after publication.

copyrighted in countries with 78 years pma.

copyrighted in countries with 95 years pma.