Highly recommended reading

Common Plant Name
By Michelle Adler.

Wouldn't be without a copy (too bad its out of print)

Eucalyptus: The Genus Eucalyptus
(Medicinal and Aromatic Plants - Industrial Profiles)
By John J.W.Coppen

There are probably few tree genera that have had as much written about them as eucalyptus.

Stirling Macoboy's - What Tree is That?
By Stirling Macoboy and Tony Rodd.

A must have for all horticulturists.

The complete Encyclopedia of Trees and Shrubs.
By Ernie Wasson.

Descriptions, Cultivation Requirements, Pruning and Planting.

A field Guide to Australian Trees.
By Ivan Holiday.

Small compact and very informative a must have out doors.

The Organic Garden's Handbook of Natural Insect and Desease Control:
By Barbara W.Eliss, Fern Marshell Bradley.

A complete Problem-Solving Guide to keeping your Garden Healthy without chemicals.

Introduction to Plant Diseases: Identification and Management
By George B. Lucas, C.L.Campbell, L.T. Lucus

Over three hundred and sixty pages in this book I do not think they missed anything very comprehensive.