00670nam a2200193Ia 4500003000900000008004100009020001800050040001600068080001900084100002600103245010600129260004800235300001700283650003800300650001800338942000700356999001700363952009600380IN-BaIIA211028s9999    xx            000 0 eng d  a0-521-55345-8  cIIA Library  a520.1(73)bEDM  aEdmondson, F K923130 0aAURA and its US national observatoriescF. K. Edmondson                                                aCambridgebCambridge University Pressc1997  axviii, 367p.  aAstronomical observatories919693  aObservatories  cBK  c13129d13129  00104070aBANbBANcGENd0000-00-00l0o520.1(73)/ EDMp14046r2021-11-05w0000-00-00yBK