Whittaker, Sir Edmund. <br/><br/>
The calculus of observation 

 - 4a ed. 
 - London :   Blackie & Son,   1948. 
 - 397 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MATEMATICAS<br/>ALGEBRA<br/>ECUACIONES
<br/><br/><label>Universal Decimal Class. No.: </label>512