00314nam a2200121Ia 4500008004100000020001800041040002400059245001400083250001100097260002200108490004500130700001700175221202s9999    xx            000 0 und d  a9789875581592  aAR-BeUNQbspaeaacr 0aLevaduras  a1a ed.  aBernalbUNQc2008  aNuevos enfoques en Ciencia y Tecnologia   aWagner Jorge