@book{151354,
	author = {Bertoli C., Nelson and ARPEL and ARPEL. Reunión a nivel de expertos (16a. : 1973 jul. : Lima, Perú) and Bertoli C., Nelson and ARPEL},
	title = {Análisis económico de la perforación de pozos},
	publisher = {ARPEL},
	year = {1973},
	address = {Lima}
}