Power Glide Spanish Learner Guide Author:Dr. Robert W. Blair, PhD Robert W. Blair is a PhD in Linguistics and has taught foreign languages for over thirty years. Having seriously studied four dozen languages, Dr. Blair understands the fascination behind language learning and his enthusiasm permeates his courses. He has prepared materials for the U.S. Military, the Peace Corps, and thousands of students from ... more »pre-school age to senior citizen.« less