00381nam a2200133Ia 4500003000900000008004100009040001600050080002300066245007500089260003000164300001000194650001500204700002800219IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a551.510.5bBRO-III 0aProgress in radio science 1960-63bvol. 3cedited by Geoffery M. Brown  aAmsterdambElsevierc1965  a196p.  aIonosphere  aBrown, Geoffrey M., ed.