00269nam a2200121Ia 4500020001400000082001900014100002600033245002800059260003500087300001500122500000500137700000500142  a715604880  a338.1bB942.CA  aBunting, A. H. d ed.  aChange in agricultureb  aLondonbGerald Duckworthc1970  axiv, 813p.  a  a