I'm searching for a copy of each of the following books, the author of
both being: Robert Macdonald:
1  "The Fifth Wind"
2  "Islands of the Pacific Rim & Their People"

I'm based in Melbourne, Victoria, Australia

Hello babs16-ga

Thank-you for your question.

I have managed to locate the books you require on the Abebooks.com
website.  This website allows sellers to sell new or used books to
buyers around the world.  There are several copies of the books
available.

The Fifth Wind
http://dogbert.abebooks.com/servlet/SearchResults?an=Robert+Macdonald&tn=fifth+wind

Islands of the Pacific Rim and their people
http://dogbert.abebooks.com/servlet/SearchResults?an=Robert+Macdonald&tn=pacific+rim

An alternative source of the book would be from Amazon.  It too has
both books available.  If you wished to order the books from Amazon
and the seller was not prepared to send them overseas to Australia you
could take advantage of a service such as ShopTheStates.com which
allows you to have the items shipped to a US postal address and then
they ship the books onward to your home address.  I have used several
of these services over the years.

The Fifth Wind
http://www.amazon.com/exec/obidos/tg/detail/-/0747503567/

Islands of the Pacific Rim and their people
http://www.amazon.com/exec/obidos/tg/detail/-/156847167X/

If you have any further questions on this subject please ask for
clarification and I will do my best to respond swiftly.

Done in the blink of an eye-lid!  Well done, researcher, & thank you.
Regards,
babs-ga