00259nam a22001097a 450000500170000000800410001702000180005808200110007610000180008724500270010530000170013220260212144318.0260212s2006    ck ||||| |||| 000 0 spa d  a9962-806-45-3  a576b1  aPaul de Kruif  aCazadores de microbios  a18.5 x 11 cm