You can find digital versions and download options at the following resources:

: While not the specific Urman book, the Manual de Bolsillo de Manejo del Dolor ALGIA is a highly relevant alternative for pain management practitioners.

The book you are looking for, (Pocket Pain Medicine), was written by Richard D. Urman and Nalini Vadivelu and published by Lippincott Williams & Wilkins in 2012.