How can I buy the book Iyengar Yoga Therapeutics The Lower Back?

I would look on Amazon.com or Barnes and Noble web site. Both should have it and you can have it shipped to you or pick it up at a Barnes and Noble bookstore near you.

The book is really a booklet at this point. Go to www.geetasguide.com and click on 'Ordering Details' then either select 'Mail in Order Form.' Just fill out the form & mail it it. OR click on PayPal. It's not a fancy text but it's what you are looking for and not available on Amazon.