Create testunimarc.dat

Unimarc in transmission format from http://www.sbn.it/opacsbn/opaclib?db=solr_iccu&select_db=solr_iccu&nentries=1&from=6&searchForm=opac/iccu/error.jsp&resultForward=opac/iccu/full.jsp&do_cmd=search_show_cmd&format=xml&rpnlabel=+Tutti+i+campi+%3D+l%27altra+faccia+della+spirale+%28parole+in+AND%29+&rpnquery=%40attrset+bib-1++%40attr+1%3D1016+%40attr+4%3D6+%22altra+faccia+della+spirale%22&totalResult=22&fname=none