00402cam a2200145ua 4500020001000000041001000010082001600020100001700036245010900053250001200162260005500174300001200229365001000241504000500251  c18.84  aengh  a537bRAM/EL  aRamsey, A.S.  aElectricity and magnetism: an introduction to the mathematical theory / cA.S.Ramsey.hTextual Documents  a2 / b.  aCambridge : bCambridge University Press , c1964.  a267 ; .  a18.84  a