Advances in Soil Science is a review series relevant to all areas of soil science. These reviews, intended primarily for scientists, teachers, and students of soil science, also provide technical background information for many additional workers and groups interested in our natural resources and man's influence on them. This is the eighth volume in the series with an international list of contributors from the United States, India, Canada and New Zealand. It contains four review chapters on the following subjects: factors affecting aluminum transformations in soil; soil productivity in dryland regions of developing countries; changes in soil structure under different cropping systems; properties and management of the depleted soils of India. These contributions present valuable information on a diversity of topics and serve as an excellent source of references.

The Papers collected in this volume are those presented at the tenth Collo- quium arranged by the Societe Universitaire Europeenne de Recherches Fi- nancieres (SUERF), which took place in Vienna in April 1982. The Society is supported by a large number of central banks, commercial banks, and other financial and business institutions, as well as by academics and others interested in monetary and financial problems. Since its estab- lishment in 1963 it has developed as a forum for the exchange of informa- tion, research results and ideas, valued by academics and practitioners in these fields, induding central bank officials and civil servants responsible for formulating and applying monetary and financial policies. A major activity of SUERF is to organise and conduct Colloquia on sub- jects of topical interest to members. The titles, places and dates of previous Colloquia for which volumes of the collected Papers were published are noted on page 421. Volumes were not issued for Colloquia held at Tar- ragona, Spain in October 1970 under the title "Monetary Policy and New Developments in Banking" and at Strasbourg, France in January 1972 un- der the title "Aspects of European Monetary Union".