Author

G. Hartwig

4 free books by G. Hartwig, free to read online. Chapter 1 of any book is free, no account needed.

Writes aboutTropics Ocean Natural history -- Tropics Natural history Mines and mineral resources Marine plants Marine animals Geology Discoveries in geography -- History Discoveries in geography

The Subterranean World

G. Hartwig

Cover of The Sea and Its Living Wonders
A Popular Account of the Marvels of the Deep and of the Progress of Martime Discovery from the Earliest Ages to the Present Time

The Sea and Its Living Wonders A Popular Account of the Marvels of the Deep and of the Progress of Martime Discovery from the Earliest Ages to the Present Time

G. Hartwig

The Polar World A popular description of man and nature in the Arctic and Antarctic regions of the globe

G. Hartwig

The Tropical World Aspects of man and nature in the equatorial regions of the globe.

G. Hartwig