00595cam a2200193 7i4500 0000005763 20070326090000.0 20050107000000.0 xx 00010 eng 0250400057 TJ900 .W23 1979 Walker Pump selection : a consulting engineer's manual Rodger Walker. Ann Arbor, Mich: Ann Arbor Science, 1979. 118p.: ill.; 24 cm. Bibliographyy: p. 43 Pumping machinery Pumping stations 0000001125 Book Open Shelf HQ Library