01040nam0-22003491i-450-99000107312040332120070615110128.0000107312FED01000107312(Aleph)000107312FED0100010731220001205d1961----km-y0itay50------baengSpace Research IIProceedings of the Second International Space Science Symposium Florence, April 10-14, 1961Edited by H.C. van de Hulst, C. de Jager, A.F. MooreAmsterdamNorth-Holland1961AstronomiaAstrofisicaCosmologia520523Hulst,Hendrik Christoffel : van de<1918- >21111Jager,Cornelis : deMoore,A. F.ITUNINARICAUNIMARCBK99000107312040332119-023.0012342FI1202-H-64684MA1FI1MA1Space Research II336412UNINA