00493nam a2200217Ia 450000500170000000800460001702000180006303700100008104000080009104000080009904000080010704100080011504100080012308400080013110000110013924500280015026000310017826000090020965000120021885600450023020260306155016.0008  260114s9999    xx            000 0 eng d  a9780511862335  aEBOOK  aCRL  beng  cCRL  2eng  aeng  qCRL  aSutton 0aObservational Astronomy  bCambridge University Press  c2012  aPhysics  uhttps://doi.org/10.1017/CBO9780511862335