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1Published 1978### CRL customization ### ?> ### Add publisher and desc details ### ?>Colombo : Workers Education Dept., C.W.C., [1978]64 p., [5] leaves of plates : ill. ; 26 cm.Subjects: “...Labor supply Sri Lanka Congresses....”
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2Colombo : Dept. of Information, Ceylon Workers' Congress,v. : ill. ; 28-46 cm.Subjects: “...Labor unions Agricultural laborers Sri Lanka Periodicals....”
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3Colombo, Ceylon Workers' Congress.volumes illustrations 25 cm.Subjects: “...Agricultural laborers Labor unions Sri Lanka Congresses....”