Indian standard: method of measurement of building and civil engineering works  pt. 20, laying of gas and oil pipe lines 
Bureau of Indian Standards                                   
 - 3rd ed. 
 - New Delhi  Bureau of Indian Standards  1993 
 - 6p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>civil engineering work<br/>Indian standard<br/>Laying of gas<br/>Oil pipe lines
<br/><br/><label>Universal Decimal Class. No.: </label>69.01:624  / IND-20