"Volcanoes Juvenile fiction." . . "Natural history Juvenile fiction." . . "Harper & Brothers." . . "Voyages and travels Juvenile fiction." . . "América del Sur" . . . . "Volcanoes." . . "Natural history." . . "Rivers." . . "Sailing." . . "Rivers Juvenile fiction." . . "Voyages and travels." . . "Animals Juvenile fiction." . . . . . . . . . "The boy travellers in South America adventures of two youths in a journey through Ecuador, Peru, Bolivia, Brazil, Paraguay, Argentine Republic, and Chili, with descriptions of Patagonia and Tierra del Fuego, and voyages upon the Amazon and La Plata rivers"@en . . . "The boy travellers in South America; adventures of two youths in a journey through Ecuador, Peru, Bolivia, Brazil, Paraguay, Argentine Republic, and Chili, with descriptions of Patagonia and Tierra del Fuego, and voyages upon the Amazon and La Plata rivers"@en . . . . . "The boy travellers in South America : adventures of two youths in a journey through Ecuador, Peru, Bolivia, Brazil, Paraguay, Argentine Republic, and Chili, with descriptions of Patagonia and Tierra del Fuego, and voyages upon the Amazon and La Plata rivers" . . . . . . "Fiction"@en . "Fiction" . . . . . . . . . . . . . . . . "The boy travellers in South America : adventures of two youths in a journey through Ecuador, Peru, Bolivia, Brazil, Paraguay, Argentine Republic, and Chili, with descriptions of Patagonia and Tierra del Fuego, and voyages upon the Amazon and La Plata Rivers" . . . . . . . . . "Juvenile works"@en . "Juvenile works" . . . . "Publishers' advertisements"@en . "Publishers' advertisements" . . . "Sailing Juvenile fiction." . . "Sugar." . . "Richardson & Cox." . . "Animals." . . "South America" . . "South America." . "Sugar Juvenile fiction." . . "Adventure stories." . . "Travel." . .