Bibliografía (6 obras)
The programme on line of General National Vocational Qualifications in engineering
1997
The early parties and politics in Britain, 1688-1832
1996
Sir Robert Walpole
1989
Robert Harley, speaker, secretary of state, and premier minister
1988
British parliamentary parties, 1742-1832
1985
The growth of parliamentary parties, 1689-1742
1976
