In order from top left to bottom right:

　　*CK-12 Biology ISBN 9 (a Flexbook textbook): $2

　　*Essentials of Biostatistics in Public Health ISBN 5 by Lisa M Sullivan (Jones & Barrett publishers): $5

　　*Medical Terminology Simplified, 4th Edition, ISBN 9 by Barbara A Gylys & Regina M Masters, Audio CD included (Davis Plus): $5

　　* Biology of Humans, Concepts, Applications, and Issues, ISBN 06 by Goodenough, McGuire, Wallace (Pearson): $5