This is a revised edition of Walker (2017). New sections or subsections have been added on the X-inefficiency model, the division of labour and the firm - both pre and post-1970, ownership of the firm and the human capital based firm. Additions have been made to sections on entrepreneurship, the...

The major additions to the revised edition include new sections or subsections on X-inefficiency, the division of labour and the firm -- both pre and post-1970, not-for-profit firms, cooperatives, mutuals, an outline of Arnold Plant's paper, ``Centralize or Decentralize?'', a discussion of the...