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Referenslitteratur 1970-talet
1975: The Mysterious World of Agatha Christie 1975 Andy East's Agatha Christie Quizbook 1975
1976: An Agatha Christie Chronology 1976 (Ace Books 10445)
1977: Agatha Christie: First Lady of Crime 1977
1978: The Mystery of Agatha Christie 1978 Orient Express. The Life and Times of the World's Most Famous Train 1978
1979: The Bedside, Bathtub & Armchair Companion to Agatha Christie 19791
1 En reviderad utgåva är senare utgiven under titeln The New Bedside, Bathtub & Armchair Companion to Agatha Christie (1986). |