00456nam a2200169Ia 4500 170901s1986 xx 000 0 und d 621.252 S11E Sahay, J Elements of Pumps and Tubewells Patna Agro Book Agency 1986 77 Engineering and allied operations Technology (Applied sciences) Hydraulic engineering Pumps ddc BK 11520 11520 0 0 ddc 0 0 RAU RAU 2017-10-18 Dr. J. Sanay, CAE, RAU, Pusa 12.00 0 621.252 S11E 69472 2017-10-18 1970-08-19 BK