Page 121: “in these circumstance” changed to “in these circumstances” Page 136: “rather then decreasing” changed to “rather than decreasing” Page 141: “while thay have achieved” changed to “while they have achieved” Page 149: “a specialy designed” changed to “a specially designed” Page 162: “peculiarly situate” changed to “peculiarly situated” Page 272: “enchanced recovery” changed to “enhanced recovery” Page 300: “naturally subsidary” changed to “naturally subsidiary”