Published over 30 years ago in 1964, "IR Theory and Practice of Infrared Spectroscopy" has served students and become one of the classics texts in the subject. Unlike many texts in molecular spectroscopy and physical chemistry, this book meets the need for an introductory text devoted entirely to IR and can be utilized even by those who approach the study with no previous background.The section on IR theory focuses on explaining the principles that are most frquently encountered in current literature and research. Presentation of theory is clear, succinct, and thorough. It, however, is not a utterly theoretical presentation that will baffle undergraduates and beginners.You might have to find this item from the library or used bookstore. It is no longer published.