Cushman, Gregory T., 1971-
Guano and the opening of the Pacific world : a global ecological history / Gregory T. Cushman.
Guano -- Peru -- History.
Guano industry -- Pacific Area -- History.
Guano -- Social aspects -- History.
Guano -- Environmental aspects -- History.
Phosphate industry -- History.
Human ecology -- History.
Peru -- Environmental conditions.
Pacific Area -- Commerce -- History.
Pacific Area -- Environmental conditions.