https://catalogobiblioteca.ingemmet.gob.pe/cgi-bin/koha/opac-search.pl?idx=an%2Cphr&q=15650%26limit%3Dau%3ALaubacher%2C%20Gerard&format=rss2 Search results for 'an,phr: 15650&limit=au:Laubacher, Gerard' at Biblioteca - Ingemmet 0 20