De Kueliyar 1940 jyly Peruding syrtqy ister ministrliginde júmys istey bastady, Peru delegasiyasy qúramynda BÚÚ-nyng alghashqy sessiyasyna qatysty. Shveysariyadaghy, KSRO-daghy, Polishadaghy jәne Venesueladaghy elshi qyzmetterin atqardy.
1975 jyly ol bas hatshynyng Kiprdegi arnayy ókili bolyp taghayyndaldy. BÚÚ bas hatshysynyng sayasy mәseleler jónindegi orynbasary boldy. 1981 jyly BÚÚ atynan Aughanstandaghy jaghdaydy retteuge qatysty.
1982 jyly ol BÚÚ Bas hatshysy bolyp saylandy. Búl qyzmetti ol 1991 jylgha deyin atqardy.
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