The higher arithmetic :
Davenport, Harold,
The higher arithmetic : an introduction to the theory of numbers /Harold Davenport - 7th ed. - Cambridge, U.K. ; New York : Cambridge University Press, 1999. - 241p.: ill. ; 24cm
The higher arithmetic : an introduction to the theory of numbers /Harold Davenport - 7th ed. - Cambridge, U.K. ; New York : Cambridge University Press, 1999. - 241p.: ill. ; 24cm