N.C.E.R.T <br/><br/>
Workshop Calculations Through Practical Problems 
N.C.E.R.T 
 - New Delhi       Publication unit NCERT        1967 
 - 76p.  cm. ill 
 - Instructional materials series; 3 .
<br/><br/><label>Standard No.: </label>215 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B0aD, K7