16 Textbooks, flashcards, and test preparation study guides, all in the fields of medicine, psychiatry, pediatrics, pathology, pharmacology, radiography, mammography, orthopedics, sports medicine, acid-base chemistry, fluid chemistry, and electrolytes, surgery, internal medicine, hospital admissions, emt-paramedics, hospital wards, obstetrics and gynecology, microbiology, infectious diseases, biochemistry, genetics, chemistry, ultrasonography, surgical technology, physiology, clinical chemistry, EKGs, and cardiac studies