Toft, Louis. <br/><br/>
Practical mathematics - I 

 - 3rd ed.  
 - London  Pitman   1951 
 - vii,504 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>510  / T644