A. J. Duffield

A. J. Duffield is an author known for his work "Peru in the Guano Age," which provides a detailed account of his visit to the guano deposits in Peru. This book reflects on the economic implications of guano extraction and its applications during a pivotal time in the region's history. Duffield's writing offers insights into the environmental and financial aspects of guano, a resource that significantly impacted agriculture and trade in the 19th century. His observations contribute to the understanding of Peru's historical context and the global significance of its natural resources.