xml_out_root = xmlNewNode(NULL, BAD_CAST "record");
xmlDocSetRootElement(xml_out, xml_out_root);
ns_pz = xmlNewNs(xml_out_root, BAD_CAST "http://www.indexdata.com/pazpar2/1.0", BAD_CAST "pz");
xml_out_root = xmlNewNode(NULL, BAD_CAST "record");
xmlDocSetRootElement(xml_out, xml_out_root);
ns_pz = xmlNewNs(xml_out_root, BAD_CAST "http://www.indexdata.com/pazpar2/1.0", BAD_CAST "pz");