00554     2200181   4500001002100000005001500021035002000036008004100056041000700097082001800104090001800122100003000140245008700170250001700257260002500274300002500299650004800324INLIS00000000001182920240305022501  a0010-0521011829240305                |          |        aen  a615.371/WOR/w  a615.371/WOR/w0 aWorld Health Organization1 aW.H.O. expert committee on biological standardization /cWorld Health Organization  a22 nd report  aGeneva :bWHO,c1970  a134 p.: ill.; 24 cm. 4aVACCINES -- PHARMACOLOGY -- STANDARDIZATION