JOURNAL OF ORGANOMETALLIC CHEMISTRY Vol. 416, Nos. 1-3 September 24th, 1991 CONTENTS Annual Surveys Silicon—the silicon—carbon bond; Annual Survey for the year 1988 by G.L. Larson (Troisdorf) Lanthanides and actinides; Annual Survey covering the years 1984-1986 by R.D. Rogers and L.M. Rogers (DeKalb, IL) Manganese, technetium, and rhenium; Annual Survey covering the year 1987 by P.M. Treichel (Madison, WI) Ferrocene; Annual Survey covering the year 1989 by B.W. Rockett and G. Marr (Wolverhampton) Organic reactions of selected 7-complexes; Annual Survey covering the year 1989 by G. Marr and B.W. Rockett (Wolverhampton) Author index