@Misc{BVMC:872621,
author = {Society for the Diffusion of Useful Knowledge (Gran Bretaña)},
title = {South América sheet I: Ecuador, Granada, Venezuela, and parts of Brazil and Guyana},
url = {https://www.cervantesvirtual.com/obra/south-america-sheet-i-ecuador-granada-venezuela-and-parts-of-brazil-and-guyana-872621}
}