TY  - BOOK
AU  - Ertell,Glenn,G.
TI  - Numerical control
SN  - SBN471244325
U1  - 629.8 
PY  - 1969///
CY  - Newyork
PB  - Wiley Interscience
KW  - Machine - tools
KW  - Numeric controls
KW  - Automatic control
KW  - Mathematical models
N1  - Bibliography: p. 148-149
ER  -