[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”