@book{151266,
	author = {ARPEL and ARPEL. Reunión a nivel de expertos (18a. : 1974 mayo. 13-18 : Quito, Ecuador) and Yacimientos Petrolíferos Fiscales, YPF},
	title = {XXVIII Reunión de expertos},
	publisher = {ARPEL},
	year = {1974},
	address = {Ecuador}
}