00492    a2200193   4500001000900000003000400009005001700013008004100030040001600071041000800087082001200095245008300107260002600190300001900216500002000235562000600255650001600261700002100277ITTG2504OSt20250115011639.0241215s1972      ||||||||||||||||||   #d  aITTG cITTG  aspa  a570 C54  aCIENCIAS BIOLOGICAS: bDE LAS MOLECULAS AL  HOMBRE/ cC.A. WELCH ... [ET AL.].  aMEXICO: bCECSAc1972  a999 P.c25 CM.  aINCLUYE INDICE.  e3  a1.BIOLOGIA.  aWELCH, CLAUDE A.