00552nam a2200193 a 4500 AR-ReUNN 20260702161847.0 260701s1991 ch |||||||||||||||||spa 92-4-154429-5 World Health Organization, Who 117985 Biological subtances : international standars and reference reagents 1990 1a. ed. Geneva World Health Organization 1991 105 páginas 24 x 16 cm Quimica 6152 FOLL (MED)5212 295295 0 0 0 1 MED MED GEN 2004-11-18 0 577 WORb ej.1 8.F00921 FOLL 295295 295295 AR-ReUNN spa AR-ReUNN aacr2 0 0 0 1 MED MED GEN 2004-11-18 0 577 WORb ej.1 8.F00921 FOLL