1.
Science of the Struggle for Existence On the Foundations of Ecology
by Cooper, Gregory J.
ISBN: 9780521804325
List Price: $84.00
2.
The Science of the Struggle for Existence: On the Foundations of Ecology
by Cooper, Gregory J.
ISBN: 9780521042048
List Price: $42.00
3.
Visions of the Future: Second Edition
by J. Daniel Batt, Greg Bear, ...
ISBN: 9780998413129
List Price: $16.02