Hyderabad:Mineral Resources Dev. Co Operative Soc. <br/><br/>
GroundWater News,vol.6(1-12) 
Hyderabad:Mineral Resources Dev. Co Operative Soc. 
 - Hyderabad:Mineral Resources Dev. Co Operative Soc.  1987 Hyderabad:Mineral Resources Dev. Co Operative Soc.  1987