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Book of the Month special price
First published in English in 1960
Interested by the possibilities offered by a long distance weapon of destruction, the ultra sound apparatus invented by Professor Calculus, the Bordurian government has Calculus kidnapped in Geneva. Soon Tintin and Captain Haddock are tracking him down.
The Calculus Affair
Tintin, Snowy, Captain Haddock, Thomson & Thompson, Professor Calculus