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Titles and year of publication:
| 1) The Bearer Plot | 1972 |
| 2) The Kiriov Tapes | 1973 |
| 3) The Portuguese Fragment | 1973 |
| 4) The Bengali Inheritance | 1975 |
| 5) An Exchange of Eagles | 1977 |
| 6) The Petrograd Consignment | 1979 |
| 7) Triple Factor | 1982 |
| 8) The Brandenburg Graduates | 1983 |
| 9) The Kremlin Control | 1984 |
| 10) The Skorpion Dossier | 1986 |
| 11) The KGB Candidate | 1988 |
| 12) Coromandel | 1995 |