1.
Aquatic Ecosystems: An Operational Research Approach - Jan E. Beyer - Hardcover
by Beyer, Jan E.
ISBN: 9780295957197
List Price: $25.00
2.
Planning for Biodiversity : Bringing Research and Management Together: Conference Proceedings
by Kus, Barbara E., Beyers, Ja...
ISBN: 9781457845550
List Price: $45.00