P.K. O'Brien (O'Brien, P.K.)

• 
  The Industrial Revolution in Europe I
  by Economic History Society, P.K. O'Brien, Patrick Karl O'Brien
  Hardcover, Blackwell Pub, ISBN 0631180737 (0-631-18073-7)
• 
  The Industrial Revolution in Europe, II
  by Patrick Karl O'Brien, Economic History Society, P.K. O'Brien
  Hardcover, Blackwell Pub, ISBN 0631181458 (0-631-18145-8)