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1.
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New York : UN, [2003]
37th edition.
Multiple languages | C 253 UN.I 2003 |
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2.
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New York : United Nations, 2003.
35th edition.
English | C 253 UN.I |
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3.
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Vienna [Austria] : United Nations Industrial Development Organization (UNIDO), 2002.
2002 edition.
English | C 387 UNIDO.I |
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4.
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Paris : Organisation for Economic Co-operation and Development (OECD), 1999.
English | B 75 OECD.O |
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