| J. H. AUSUBEL | National Academy of Engineering 2101 Constitution Avenue, N.W. Washington DC 20418, USA |
| JAN DE VRIES | Department of History & Economics University of California at Berkeley Berkeley, California 94720, USA |
| DENNIS EPPLE | Graduate School of Industrial Administration Carnegie-Mellon University Pittsburgh, Pennsylvania 15213, USA |
| JOSÉ CARLOS ESCUDERO | Department of Social Medicine Universidad Autónoma Metropolitana Xochimilco-Mexico, POB 23-181 Mexico 23, DF |
| BARBARA FARHAR-PILGRIM | 4600 Greenbriar Court Boulder, Colorado 80303, USA |
| G. FARMER | Climatic Research Unit University of East Anglia Norwich NR4 7TJ, England |
| MICHAEL H. GLANTZ | Environmental & Societal Impacts Group National Center for Atmospheric Research Boulder, Colorado 80307, USA |
| F. KENNETH HARE | Trinity College in the University of Toronto 6 Hoskin Avenue Toronto, Ontario M5S 1H8, Canada |
| R. L. HEATHCOTE | The Flinders University of South Australia Bedford Park, South Australia 5042 |
| N. J. HUCKSTEP | Climatic Research Unit University of East Anglia Norwich NR4 7TJ, England |
| M. J. INGRAM | Department of Modern History The Queen's University of Belfast Belfast, NT7 INN, Northern Ireland |
| JILL JÄGER | Fridtjof-Nansen-Strasse 1 D-7500 Karlsruhe 41 Federal Republic of Germany |
| N. S. JODHA | International Crop Research Institute for the Semi-AridTropics Andhra Pradesh 502 324 Patanchnu P.O., India |
| ROBERT W. KATES | Center for Technology, Environment, and Development Clark University Worcester, Massachusetts 01610, USA |
| TSUYOSHI KAWASAKI | Faculty of Agriculture Tohoku University Sendai 980, Japan |
| V. F. KRAPIVIN | Computing Center of the USSR Academy of Sciences 40 Vavilova Street Moscow 117333, USSR |
| MARIA E. KRENZ | Environmental & Societal Impacts Group National Center for Atmospheric Research Boulder, Colorado 80307, USA |
| LESTER B. LAVE | Graduate School of Industrial Administration Carnegie-Mellon University Pittsburgh, Pennsylvania 15213, USA |
| HENRI NOEL LE HOUÉROU | CNRS, CEPE Louis Emberger B. P. 5051 Montpellier Cedex 34033, France |
| C. A. KNOX LOVELL | Department of Economics University of North Carolina Chapel Hill, North Carolina 27514, USA |
| A. C. MASCARENHAS | Institute of Resource Assessment University of Dar es Salaam Dar es Salaam, Tanzania |
| W. J. MAUNDER | New Zealand Meteorological Service P O Box 722 Wellington 1, New Zealand |
| DAVID MILLER | Department of Geological Sciences The University of Wisconsin-Milwaukee Milwaukee, Wisconsin 53201, USA |
| N. N. MOISSEIEV | Computing Center of the USSR Academy of Sciences 40 Vavilova Street Moscow 117333, USSR |
| R. MORTIMER | Climatic Research Unit University of East Anglia Norwich NR4 7TJ, England |
| HENRY A. NIX | Commonwealth Scientific & Industrial Research Organization Division of Land & Water Resources Canberra City A.C.T. 2601, Australia |
| BÉLA NOVÁKY | Institute for Water Management Alkotmány u. 29 Budapest 1054, Hungary |
| A. E. J. OGILVIE | Climatic Research Unit University of East Anglia Norwich NR4 7TJ, England |
| CSABA PACHNER | West Transdanubian Water Authority Vörösmarty u. 2 Szombathely 9700, Hungary |
| MARTIN L. PARRY | Department of Geography University of Birmingham P O Box 363 Birmingham B15 2TT, England |
| WILLIAM E. RIEBSAME | Department of Geography University of Colorado Boulder, Colorado 80309, USA |
| JENNIFER ROBINSON | Department of Geography University of California at Santa Barbara Santa Barbara, California 93106, USA |
| V. KERRY SMITH | Department of Economics Vanderbilt University Nashville, Tennessee 37235, USA |
| YU. M. SVIREZHEV | Computing Center of the USSR Academy of Sciences 40 Vavilova Street Moscow 117333, USSR |
| KÁROLY SZESZTAY | Institute for Water Management Alkotmány u. 29 Budapest 1054, Hungary |
| A. M. TARKO | Computing Center of the USSR Academy of Sciences 40 Vavilova Street Moscow 117333, USSR |
| ANNE V. T. WHYTE | Institute for Environmental Studies University of Toronto Toronto, Ontario M5S 1A1, Canada |
| T. M. L. WIGLEY | Climatic Research Unit University of East Anglia Norwich NR4 7TJ, England |
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