000 00289nam a2200109 4500
008 240730b |||||||| |||| 00| 0 eng d
040 _aNational Science Library
_cNational Science Library
245 _aConferencias 1964-65
260 _aMadrid:
_c1965
300 _a135p.
942 _2udc
_cBK
999 _c65140
_d65140