Viewer”. Obtenido de: books.google.com/ngrams/graph?content=puenting&year_start=1800&year_end=2000&corpus=21&smoothing=3&share=&direct_url=t1%3B%2Cpuenting%3B%2Cc0...
(Great Britain). Philosophical Transactions and Collections to the End of the Year 1700; Abridg'd and Dispos'd Under General Heads... 1721. Ejemplo: The...