@book{157750,
	author = {Roldan Tapia Ponce, Jaime and Pluspetrol Perú Corporation and INGEPET '99, International Seminar (3° : 1999 Oct. 26-29 : Lima, Perú) and Chuyes Toledo, Jose Antonio and Pluspetrol Perú Corporation},
	title = {Herramienta ensanchadora para perforar formaciones arcillosas},
	url = {https://biblioteca.iapg.org.ar/ArchivosAdjuntos/Ingepet/EXPL-4-JR-10.PDF}
}