July 1 9 8 9 Volume L X I No. 7
The publishers of Geographical Magazine pay a licence fee to the Royal Geographical Society. This fee is assigned to a fund for the advancement of exploration and research, and the promotion of geographical knowledge. The fund is administered by a board of trustees chaired by the President of the Royal Geographical Society, Lord Chorley and its Director, Dr. John Hemming.
Fron t C o v e r P h o to g r a p h y 1. Amerasians, p. 25, Adrian Bradshaw. 2. Climatology, p. 44, Science Photo Library. 3. Oceanography, p. 16, Science
Photo Library. 4. Ethiopian Villagization, p. 34, GoldwaterlNetwork.
The Geographical Ltd . © 1989 Hyde Park Publications, 27 Kensington Court, London W8 5DN. Telephone: 01-376 2077.
E d i t o r ia l D e p a r tm e n t Editor: Mark Ausenda Assistant Editor: Rachel Homer Art Editor: Sally Doust Design Consultant: Charles Karsenbarg News Editor: Andi Spicer Sub Editor: Susannah Ward Editorial Secretary: Rosabianca Ligios Editorial Consultant: David Gwyn Jones E d i t o r ia l A d v i s o r y P a n e l Professor E. H. Brown, London University Applied geomorphology Professor Peter Haggett, Bristol University Spatial analysis, epidemiology Professor R J Chorley, Cambridge Environmental Systems Professor D W Rhind, Birkbeck College Digitized mapping, land use Professor John Townshend, Reading University Remote sensing Professor R U Cooke, London University Arid lands Professor John I Clarke, Durham University Population Professor Andrew Goudie, Oxford Desert geomorphology Professor Timothy O’Riordan, East Anglia University Environmental management Professor John Thornes, Bristol University Hydrology and erosion Professor Denys Brunsden, London University Palaeogeomorphology A d v e r t i s in g D e p a r tm e n t Advertisement Director: Ray Carmen Publishing Consultant: John Innell Advertisement Manager: Ian Selwyn-Yates Advertisement Consultant: Tim Boyd-Maunsell Sales Executive: Helen Baker S u b s c r ip t i o n D e p a r tm e n t The Geographical Magazine 8 Grove Ash, Bletchley, Milton Keynes MK1 1BZ. Telephone: (0908) 71981 North American Distribution PM G INC, 303 Linwood Avenue, Fairfield CT06430 USA. Tel: (203) 259 4662. P u b l i s h e r Hyde Park Publications Ltd. Directors: Paul Williams, Nicolas Cutrera, Paolo Cutrera General Manager: Nicholas Dixey Group Accountant: Michael Greely IS S N : 0016-74IX
GEOGRAPHICALTHE MONTHLY MAGAZINE OF THE ROYAL GEOGRAPHICAL SOCIETY FOUNDED BY MICHAEL HUXLEY, 1935
Life on a com m un ity fa rm in the United States (page 29.)
MLInside Cover - News from the RGS__________________________________ Isabella Tree
I Frontiers - Latest expeditions
B jJ Expeditions The Royal Geographical Society approved expeditions 1989 U i ] Oceanography Untapped mineral wealth at the bottom of the oceans
Geopolitics As the Vietnamese withdraw, what does the future hold for Cambodia
Demography Amerasians: a living reminder of the war in Vietnam
Migration Hmong: Asian refugees in the
Villagization Reorganization of 39 million Ethiopians and their homes - into regimented settlements
Systems analysis Introducing flow charts to forecast famine
E l U Urban development European villages past, present and future
Climatology Technology’s answer to the British weather
E l * ] Equipment- Minimum impact outdoor enjoyment
| 2 ] Compass
1 ^ ] Books
Dr Patrick Hamilton
Dr Judith Maizels
Dr Brian Roberts