00780    a2200145   4500003000500000005001700005040000900022082001500031100001800046245005500064260002800119300003000147505041900177650003800596Nust20221202113104.0  cNust  a538.74,RYD  a Ryder, R. W.  aEarthing principles and practice / c Ryder, R. W.  aLondon,bPitmanc[1952]  axi, 108 p.billus. 22 cm.  aPhysical Characteristic of the Earth (Page-5), The Resistance of Electrodes to Earth (Page-12), High Voltage Earthling (Page-23), Lightning Protection (Page-36), The Human Elements (Page-41), Consumer’s Earthling (Page-45), Earth Projection on Low Voltage Networks (Page-60), Measurement of Earth Resistance (Page-68), Current-Carrying Capacity of Earth Electro modes (Page-77), Special Effects (Page-83).         aEarthing principles and practice.