TY  - BOOK
AU  - Pettofrezzo, Anthony J
AU  - Byrkit, Donald R
TI  - Elements of number theory
U1  - 512.7  PET-E;1 
PY  - 1970///
CY  - Prentice-Hall Inc., Englewood Cliffs, New Jersy
KW  - Number theory-- Algebra-- Mathematics
ER  -