Responding to Danny's good suggestion, I made a sample ebook available for download before making a decision to buy or not to buy:
It consists of
(1) Table of Contents
(3) Foreword by Liu Ji, the celebrated military expert who assisted the founding emperor of the Ming Dynasty ending the Mongolian rule in China.
(4) Using Chapter to get Margaret Thatcher's chart.
(5) Numeral 17 interpreting Margaret Thatcher's chart.
(6) Links to buy the ebook.