00707nam a22002897i 450000500170000000800410001704100080005810000170006624500170008365000150010065000080011565000180012365000140014165000120015565000290016765000120019665100190020865100200022765100240024765100160027165100180028765500150030577300440032099600070036493900130037195200330038420170215104200.0880424s1988    sp     gr     000 0 spa c  aspa1 aSALLERAS, L.10aVACUNACIONES14aEnfermedad14aOMS14aPoliomielitis14aProgramas14aRubeola14aEnfermedades infecciosas14aVacunas14aAlemania9163514aFrancia922619514aReino Unido922619614aSuiza9240414aEE.UU.960941 4aDocumental0 tJANOgVol. 33, no. EXTRA (1987), p. 11210a42  a19880424  oR.674oDepósito (72/73/74)