Australia PS 1981 13th International Botanical Congress - Sydney

• Issue Date: 24 August 1981
• Type: Envelope
• Print Run :
• Size:

First Day of Issue

Validated in Sydney University	Validated in the Royal Tasmanian Botanical Gardens, Hobart
Validated in Lilydale, Tasmania	Validated in Waratah, Tasmania
Validated in Elizabeth Farm House, Parramatta, NSW	Validated in Archerfield, Q
Validated in Toukley, NSW