0133938611 / 9780133938616 Biology: The Core, Books a la Carte Edition & Modified MasteringBiology with Pearson eText -- ValuePack Access Card -- for Biology: The Core PackagePackage consists of: 0321833279 / 9780321833273 Biology: The Core, Books a la Carte Edition0321856066 / 9780321856067 Modified MasteringBiology with Pearson eText -- ValuePack Access Card -- for Biology: The Core