The content of this book is mainly research work, personally discovered for the first time in the whole history of the world, and is completely new. The use of sophisticated measurement systems based on scientific concepts and other such technologies has greatly improved understanding of the generation of speech and the treatment of puberphonia, giving rise to new scientific theories and concepts. Science ideas are subject to change. Ideas about voice boxes have changed, which led to the development of puberphonia voice correction.

The object of this book is to impart the most current knowledge of UMAR in treating puberphonia. Umar is a pathway of creating new idea in treating puberphonia / boys talking in female tone. The main objectives are awareness, identification, diagnosis, evaluation, data collection, treatment , follow up and thereby eradication of puberphonia from the society. This topic is important to the prospective readers because it is specific, relevant common voice change condition occurring in mostly adulthood male of an unknown etiology

Vols. for 1911-13 contain the Proceedings of the Helminothological Society of Washington, ISSN 0018-0120, 1st-15th meeting.

Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.