https://catalogobiblioteca.ingemmet.gob.pe/cgi-bin/koha/opac-search.pl?q=ccl=an%3A%22411%22%20and%20au%3APearce%2C%20Thomas%20H.&format=rss2 Search results for 'an:"411" and au:Pearce, Thomas H.' at Biblioteca - Ingemmet 0 20