2 dos dohs second segundo 3 tres trays third tercero 4 cuatro kwah-troh fourth cuarto 5 cinco seen-koh fifth quinto 6 seis says sixth sexto 7 siete see-ay-tay seventh séptimo 8 ocho oh-choh eighth octavo 9 nueve new-ay-vay ninth noveno 10 diez dee-ays tenth décimo 11 once ohn-say eleventh undécimo 12 doce doh-say twelfth duodécimo
Ciphers in the Past Tense 20. The Anatomy of Cryptology Suggestions for Further Reading Index A Note on the Abridged Version MANY PEOPLE have urged me to put out a paperback edition of The Codebreakers. Here it is. It comprises about a third of the original. This was as big as the publishers and I could make it and still keep the price within reason. In cutting the book, I retained mainly stories about how codebreaking has affected history, particularly in World War II, and major names and stages in the history of cryptology. I eliminated all source notes and most of the technical matter, as well as material peripheral to strict codebreaking such as biographies, the invention of secondary cipher systems, and miscellaneous uses of various systems. I had no space for new material, but I did correct the errors reported to me and updated a few items. The chapters have been slightly rearranged.
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