TY  - BOOK
AU  - Cheney, E W
AU  - 
TI  - Approximation theory
U1  - 511.4 
PY  - 1966///
CY  - New York
PB  - McGraw-Hill
KW  - Mathematics
KW  - Number theory
KW  - Set theory
KW  - Group theory
KW  - Matheatical sciences
KW  - Arithmetic
KW  - Numbers
KW  - theory of numbers
KW  - Algebra
N1  -  bibliog, p.230-254
ER  -