00518nam a2200217Ia 450000500170000000800460001702000180006303700100008104000080009104000080009904000080010704100080011504100080012308400080013110000180013924500340015726000130019126000090020465000260021385600610023920260324153223.0008  260324s9999    xx            000 0 eng d  a9780081022566  aEBOOK  aCRL  beng  cCRL  2eng  aeng  qCRL  aHawkes, Peter 0aPrinciples of Electron Optics  bElsevier  c2017  aPhysics and Astronomy  uhttps://www.sciencedirect.com/science/book/9780081022566