TY  - BOOK
AU  - Vinogradov,I.M.
AU  - Popova, Helen .
TI  - An introduction to the theory of numbers
U1  - 512.7 23
PY  - 1952///
PY  - 1955///,1961]
CY  - London, New York
PB  - Pergamon Press
KW  - Number theory
ER  -