Secrets of Bija (Seed) Mantras
Foreword by Thomas Ashley-Farrand
List Price: 14.95
ISBN: 9780910261944
Lotus Press Link
Internatural Link for Ordering  

Perhaps the most detailed book available on the yogic meaning of the prime seed mantras and letters of the Sanskrit alphabet along with their application for body, mind and spirit. Unfolds secrets of how to use mantra with pranayama and many esoteric meditation practices. Examines the usage of mantras in all the main branches of Yoga (Hatha, Raja, Bhakti, Jnana), Tantra, Veda, Ayurveda, Jyotish and Vastu, as well as relative to Kundalini and the chakras and major Hindu deities. An excellent reference guide for years to come.

Note the quotes about the book from below:

Modern science and ancient wisdom traditions agree that the universe is a symphony of vibrational frequencies. In this beautiful, comprehensive, and unique work, Vamadeva Shastri elaborates the essential truths about cosmic sound, and how we can employ important mantras for healing, transformation and inner awakening.
Deepak Chopra, M.D. and David Simon, M.D., Co-founders, the Chopra Center for Wellbeing

Those who know will confirm that the works of Shri Vamadeva Shastri are distinguished by their authenticity. This is so because they are based on (1) his personal quest and experience, (2) deep dwelling into the texts, and (3) oral learning received from many authentic teachers who are experts in their areas of knowledge. The present work on Mantra Yoga by Shri Vamadeva Shastri is a delight to read as it leaves out no corner of multigonic truths unexplored with regard to the complex science of mantras.
Swami Veda Bharati, Swami Rama Sadhaka Gram, Rishikesh, India

The book, Mantra Yoga and the Primal Sound by Dr. David Frawley is not simply a collection of mantras or an expression of their moral significance; it is an interpretation of the philosophy and the reality of the mantric approach to intelligence and knowledge held within the sound code or vibratory pattern behind the universe itself.
Dr. Sampadananda Mishra, Sri Aurobindo Society

Mantra Yoga and Primal Sound shines light on the deepest mystical knowledge related to mantras. Using diverse Sanskrit texts and his own spiritual insights, David Frawley has written a wonderful book that will serve as essential guide on mantra for spiritual seekers everywhere.
Subhash Kak Phd., author the Gods Within, the Prajna Sutras, and the Architecture of Knowledge

Vamadeva Shastri unfolds the deeper essence and living Shakti of the most powerful Sanskrit mantras for the reader to understand and experience in a profound manner. The book is not just another study of mantra but an expression of the spirit of mantra, which connects us to our highest reality and consciousness.
Yogini Shambhavi, author Yogic Secrets of the Dark Goddess

David Frawley's new book Mantra Yoga and Primal Sound celebrates his great love and vast knowledge of the subject. It is an energizing and vibrant description of this most ancient and powerful spiritual practices at the very heart of the Yoga tradition.
Vyaas Houston, the American Sanskrit Institute

Mantra Yoga and Primal Sound is the most comprehensive book on mantra I have ever encountered. Broad in scope, it includes rare and esoteric aspects of each individual Sanskrit phoneme, drawing from the deep well of Vedic knowledge that Vamadeva has accumulated over many decades of study and practice.
Nicolai Bachman, director of Sanskrit Sounds, author of the Language of Yoga

David Frawley/Vamadeva Shastri, has continuously informed us with clarity and perfection in his numerous books on Ayurveda, Vedic astrology, Yoga and the ancient history of India. Now he has again set the standard for understanding mantra practice.  Dr. Frawley is a true modern Acharya, leading us to the vast treasure of Vedic wisdom.  This book should be in the library of every true yogi.
Jeffrey Armstrong/Kavindra Rishi, poet and Vedic astrologer, author of Karma, the Ancient Science of Cause and Effect