This work is excerpted from an official document of the United Nations. Prior to 17 September 1987 it was the policy of this organisation to not seek copyright, keeping most of its documents in the public domain, in order to disseminate "as widely as possible the ideas (contained) in the United Nations Publications" (detail).
UN works not in the annex to Administrative Instruction ST/AI/189/Add.9/Rev.1 (available in English) published in the US before 1978 are in the public domain because they were published without a copyright notice. UN works not in the annex to ST/AI/189/Add.9/Rev.1 published in the US between 1978 and 17 September 1987 are in the public domain because they were published without a copyright notice and their copyright was not subsequently registered with the U.S. Copyright Office within 5 years (from 1978 through 1993 the UN did not register any document published in the US before 17 September 1987).
This work is in the public domain in the United States because it meets two requirements:
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it is not sourced to a document listed in the appendix of ST/AI/189/Add.9/Rev.1 (these documents were copyrighted under an exception to the general practice).
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Yr wyf fi, deiliad hawlfraint y gwaith hwn, yn ei ryddhau i'r parth cyhoeddus, a hynny'n fyd-eang. Hwyrach nad yw hyn yn bosib yn ôl cyfraith rhai gwledydd; os felly: Rwyn rhoi i unrhywun yr hawl i ddefnyddio'r gwaith hwn at unrhyw ddiben, heb unrhyw amodau, oddieithr unrhyw amodau gofynnol yn ôl y gyfraith.
This image shows a flag, a coat of arms, a seal or some other official insignia. The use of such symbols is restricted in many countries. These restrictions are independent of the copyright status.
rhannu – gallwch gopïo, dosbarthu a throsglwyddo'r gwaith
ailwampio – gallwch addasu'r gwaith
Ar yr amodau canlynol:
cydnabyddiaeth – Mae'n rhaid i chi nodi manylion y gwaith hwn, rhoi dolen i'r drwydded, a nodi os y bu golygu arni, yn y modd a benwyd gan yr awdur neu'r trwyddedwr (ond heb awgrymu o gwbl eu bod yn eich cymeradwyo chi na'ch defnydd o'r gwaith).
rhannu ar dermau tebyg – Os byddwch yn addasu'r gwaith hwn, neu yn ei drawsnewid, neu yn adeiladu arno, mae'n rhaid i chi ddosbarthu'r gwaith dan drwydded sy'n union yr un fath same a'r gwreiddiol.
Mae'r ffeil hon yn cynnwys gwybodaeth ychwanegol, sydd mwy na thebyg wedi dod o'r camera digidol neu'r sganiwr a ddefnyddiwyd i greu'r ffeil neu ei digido. Os yw'r ffeil wedi ei cael ei newid ers ei chreu efallai nad yw'r manylion hyn yn dal i fod yn gywir.