Porteous , I. R. <br/><br/>
Geometric  differentiation:  for the intelligences of curves and surfaces.-2nd ed. 
I.R. Porteous 
 - 2nd ed. 
 - Cambridge:  Cambridge University Press  2001 
 - xv, 333p. 
<br/><br/><label>Subjects--Index Terms: </label>Geometry, differential 
<br/><br/><label>Universal Decimal Class. No.: </label>514.7  / POR