Género
Conservación y protección ambiental
Wild Spain (España agreste)
Chapman, Abel, Buck, Walter John
The Falls of Niagara and Other Famous Cataracts
Holley, George W.
Checking the Waste: A Study in Conservation
Gregory, Mary Huston
Rodent Control Aided by Emergency Conservation Work
Young, Stanley Paul
Stray Leaves from an Arctic Journal
Osborn, Sherard
The Hurricane Guide
Birt, William Radcliff
The Water-Finders
Vandeleur, Judith
The Last Straw
Titus, Harold
My Year in a Log Cabin
Howells, William Dean
Our Common Land (and Other Short Essays)
Hill, Octavia
Lightfoot the Deer
Burgess, Thornton W.
The Development of the Feeling for Nature in the Middle Ages and Modern Times
Biese, Alfred
Woodland Gleanings: Being an Account of British Forest-Trees
Tyas, Robert
Locusts and Wild Honey
Burroughs, John
The Way of the Wild
St. Mars, F.
The Fat of the Land
Streeter, John Williams
In New England Fields and Woods
Robinson, Rowland Evans
Nature Near London
Jefferies, Richard
Children of the Wild
Roberts, Charles G. D., Sir
Down the Columbia
Freeman, Lewis R.
Dead Man's Plack and an Old Thorn
Hudson, W. H.
Hoof and Claw
Roberts, Charles G. D., Sir
Poachers and Poaching
Watson, John, F.L.S.
Whales, Dolphins, and Porpoises of the Western North Atlantic
Winn, Howard Elliott, Leatherwood, Stephen, Caldwell, David Keller