Neil D. Jespersen (Port Washington, NY)
Neil D. Jespersen is an active member of the Department of Chemistry at St. John's University (Queens, New York). He earned his B.S. degree with special attainments in chemistry at Washington and Lee University (Lexington, Virginia) and his Ph.D. at Pennsylvania State University (University Park, Pennsylvania). He specializes in analytical chemistry research and has mentored more than 100 undergraduate research students and 25 graduate students. Dr. Jespersen is a fellow of the American Chemical Society and currently serves as a councilor from the New York section. He is also the faculty advisor to the ACS Student Chapter at St. John's University.

Pamela K. Kerrigan (Tarrytown, NY)
Pamela K. Kerrigan is an Associate Professor and director of the Division of Natural Sciences at the College of Mount Saint Vincent (Bronx, New York). She earned her B.A. at Lakeland College as a double major in biology and chemistry, her M.S. at the University of Wisconsin (Milwaukee), and her Ph.D. at Arizona State University in chemistry. For 10 years, Dr. Kerrigan was a reader for the AP Chemistry exam. Dr. Kerrigan is the past chair of the New York section of the American Chemical Society and is a councilor. During her tenure at the college, she has been the mentor for the American Chemical Society Student Chapter.

About the Publisher
Many great things begin with a tiny spark, and for Manuel H. Barron that spark came from a mimeograph machine in the basement of his Brooklyn, NY, bookstore in the late 1930s. People from the community asked Mr. Barron for books to help their children study for the New York State Regents exams. After realizing there wasn't anything available, Mr. Barron created his own study guides.

Now, more than 80 years later, Barron's continues to help millions of learners worldwide prepare for their next steps. With offerings from pre-college prep to world language guides and professional certification exams, Barron's wants to be part of your success story no matter what learning path you're on. You can trust Barron's to provide exceptional products created only by top experts with years of experience in education. From generation to generation, our mission remains the same: Learn, grow, and succeed with Barron's throughout your life-long learning journey.