@prefix rdf: . @prefix ns1: . @prefix bibo: . ns1:id rdf:type bibo:Document , bibo:Book . @prefix marcrel: . @prefix ns4: . ns1:id marcrel:aut ns4:id . @prefix dcterms: . ns1:id dcterms:bibliographicCitation "Opera quae exstant omnia I, Syntaxis Mathematica / Ptol\u00E9m\u00E9e Claude ; edidit J.L. Heiberg / Leipzig : B.G. Teubner , 1898" . @prefix dc: . ns1:id dc:date 1898 . @prefix ns7: . ns1:id ns7:holdingsCount 0 .