This report covers the period summer 1987 – summer 1990. It is divided into sections written by various experts in each subfield. I would like to thank the many individuals who worked hard in preparing this report. Without their cooperation and hard work this report would not exist.

The following summaries usually begin with a list of general references in the particular subfield (monographs, catalogs, and relevant symposia). Subsequent references to these volumes are sometimes identified by only the editor’s name, underlined, plus a page number. All references are given with only one name, followed by a + sign if there are additional authors. The citations in the Soviet and Chinese literature are given in the corresponding journals of English translations, which of course provide the references to the original journal. I have edited several contributions to force them to fit into just slighdy more than the space we were allowed, but all papers originally cited are in this version.