Exemplar instructional material for work experience on sheet metal work class 7th and 8th 
NCERT 
 - New Delhi, India  National Council of Educational Research and Training  1987 
 - 14p. 
<br/><br/><br/>MACESE 
<br/><br/><label>Source: </label>Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teaching aids