[en] [Gutenberg 61723] • Jack Miner and the Birds, and Some Things I Know about Nature Forgotten Books
[en] [Gutenberg 17748] • The Extermination of the American Bison BiblioLife
[en] [Gutenberg 20653] • Checking the Waste: A Study in Conservation Forgotten Books
[en] [Gutenberg 33944] • How to Observe: Morals and Manners BiblioLife
[en] Ground Truth: A Guide to Tracking Climate Change at Home University of Chicago Press
[en] Why vs Why · Nuclear Power Pantera Press
[en] Why vs Why Pantera Press
[en] The Water Will Come Little Brown and Company
[en] What Is Man? Elm Hill
[en] You Can Save the Earth Hatherleigh Press
[en] The New Noah Pan Macmillan
[en] What the Robin Knows · How Birds Reveal the Secrets of the Natural World Mariner Books
[en] Space Debris and Other Threats From Outer Space Not Avail
[en] Forrest J. Ackerman Presents This Island Earth Pulpless.com
[en] [Gutenberg 33178] • The Holy Earth Dover Publications
[en] Blue Revolution · Unmaking America's Water Crisis Beacon Press
[en] Storms of My Grandchildren · The Truth About the Coming Climate Catastrophe and Our Last Chance to Save Humanity Bloomsbury Publishing PLC
[en] Wild as It Gets Tafelberg