Peru in the Guano Age :
Duffield, Alexander James
Peru in the Guano Age : Being a Short Account of a Recent Visit to the Guano Deposits With Some Reflections on the Money They Have Produced and the Uses to Which it has Been Applied [electronic resource] / Alexander James Duffield - Project Gutenberg, 2014 - Project Gutenberg 45998 .
Public domain in the USA.
Electronic text
Peru in the Guano Age : Being a Short Account of a Recent Visit to the Guano Deposits With Some Reflections on the Money They Have Produced and the Uses to Which it has Been Applied [electronic resource] / Alexander James Duffield - Project Gutenberg, 2014 - Project Gutenberg 45998 .
Public domain in the USA.
Electronic text