Invasive Species
Endangered species
Rex Burns
The Alien Animals, The Story of Imported Wildlife
George Laycock
Alien Aberrations
David Dunwoody
Insects in danger
Kathryn Smithyman
Insects, their ways and means of living
R. E. Snodgrass
Micro-Organisms
J.I. Williams
Savage Species
Jonathan Janz
The nest
Eli Cantor
Contamination
Les Martin
Carnivore
Guy N. Smith