16 publications, namely, books, study guides and charts on a variety of college-level subjects, namely, Math, Algebra, Calculus, Trigonometry, Geometry, Chemistry, Organic Chemistry, Biology, Microbiology, Physics, Astronomy, Computer Science, Geology, History, Psychology, Philosophy, Economics, Film, Health, Art History, Language, English, ESL, Sign Language, Spanish, French, Italian, German, Hebrew, Japanese, Chinese, Latin, Law, Anatomy, Medicine, Nursing, Music, Marketing, Macroeconomics, Accounting, Mythology, Women's Studies, Sociology and SAT Test Prep