Provides an annual review of the literature published on organophosphorus chemistry between July 1998 and June 1999. Coverage includes phosphines and their chalcogenides, phosphonium salts, low coordination number phosphorus compounds, penta- and hexa-coordinated compounds, tervalent phosphorus acid derivatives, quinquevalent phosphorus acids, nucleotides and nucleic acids, ylides and related compounds, phosphazenes and the application of physical methods in the study of organophosphorus compounds.