Ertell, Glenn, G. <br/><br/>
Numerical control/ 
Glenn G. Ertell 
 - Newyork:  Wiley Interscience,  c1969 
 - 149 p.;  21 cm. 
<br/><br/>Bibliography: p. 148-149 
<br/><br/><label>ISBN: </label>SBN471244325  $ 10.75 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Machine - tools--Numeric controls<br/>Automatic control--Mathematical models
<br/><br/><label>Dewey Class. No.: </label>629.8