In Perù alla ricerca di piante rare : resoconto di una missione botanica / Luciano Giugnolini ; foto di Marcello Tardelli
In our hands : directory non-governmental organizations accredited to the United Nations Conference on Enviroment and Development
In Hanover : a reply to some of the queries of the intelligent visitor who likes to know where he has been, and first aid to the resident in answering questions