00493nam a2200217Ia 450000500170000000800460001702000180006303700100008104000080009104000080009904000080010704100080011504100080012308400080013110000120013924500230015126000310017426000090020565000160021485600450023020260306154730.0008  260114s9999    xx            000 0 eng d  a9781139097017  aEBOOK  aCRL  beng  cCRL  2eng  aeng  qCRL  aNewcomb 0aPopular Astronomy   bCambridge University Press  c2012  a Philosophy  uhttps://doi.org/10.1017/CBO9781139097017