Drain envelope laboratory testing and analysis procedures. / 
Water and power development authority. 
 - Lahore:  Water and power development authority.  Mar, 1995 
 - Various Pages:  illustrations ; 
 - Publication no. 109. .
<br/><br/><br/>In English 
<br/><br/> Pbk. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Laboratory testing--Drainage system
<br/><br/><label>Dewey Class. No.: </label>R 379.2 DRA 1995