Wall, Jasper Vivian2017-10-312017-10-311970b1016158http://hdl.handle.net/1885/132719Virtually all conclusions on the physics of extragalactic radio sources have been derived from studies of those catalogued in sky surveys at or below the frequency of 408 MUz. Profound cosmological conclusions have also been drawn from studies of the source populations obtained in low frequency surveys«, This thesis presents the results of extragalactic source surveys at the comparatively high frequency of 2700 MHz, carried out over about 0.8 sr. with the 210 - foot telescope of the ANRAO at Parkes, N.S.W. The surveys are the first parts of the Parkes 2700 MHz survey which will extend eventually over the entire sky between declination -90° and declination +27°, the northernmost limit of observation for the Parkes telescope.1 venRadio astronomyCosmology197010.25911/5d723d28a47ec2017-10-10