00301nam a22001097a 4500020001500000082001200015100003400027245004300061260004300104300002100147650002300168  a0675026202  a574 KAS  aKaskel, AlbertaHummer,Paul.J  aMerrill Biology an Everyday Experience  a McGraw-Hill Publishing Company c1992  a744pbHard cover  aChemistryaBiology