1.
|
London : Routledge, 2015.
English | C 131 WEL.P |
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2.
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Leiden : Martinus Nijhoff Publishers, 2011. Fifth revised edition.
English | C 14 SCH.I (5) |
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3.
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Oxford : Hart, 2010.
English | C 221 KOL.I |
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4.
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Paris : Éditions UNESCO, 2009.
French | C 336 HAV.U (F) |
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5.
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Boston : Martinus Nijhoff Publishers, c2003. Fourth revised edition.
English | C 14 SCH.I |
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6.
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Paris : Librairies techniques, 1977.
French | G 58 TRA |
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7.
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New York, N.Y. : United Nations Development Programme, 1993.
English | C 259 BER.R |
|