https://catalogobiblioteca.ingemmet.gob.pe/cgi-bin/koha/opac-search.pl?q=ccl=an%3A%2264571%22%20and%20au%3ALazo%20Huaruco%2C%20Juan%20Carlos%20and%20su-to%3APETROGRAF%C3%83%C2%8DA&format=rss2 Search results for 'an:"64571" and au:Lazo Huaruco, Juan Carlos and su-to:PETROGRAFÍA' at Biblioteca - Ingemmet 0 20