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Leroy Laverman

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Stand Alone

Chemical Principles
Principes de chimie
Princípios de Química - 7.ed. Questionando a Vida Moderna e o Meio Ambiente
Chemical Principles + Sapling Learning Homework and E-text for Chemical Principles, 7th Ed., 6 Month Access
Saplingplus for Chemical Principles, Single-term Access The Quest for Insight
Chemical Principles + Sapling Learning Homework and E-text for Chemical Principles, 7th Ed., 24 Month Access