This book was edited by Robert Steel, who was GA President in 1973.
There are several chapters written by former GA Presidents, such as K C Edwards.
Click here to access a PDF of the book.
There is quite a bit here about the idea of regions: something tied to the work of Herbertson, Fleure and R J Unstead.
This includes terms such as 'stows' and 'tracts'.
The GA also had a committee on regions for a while. There is mention in this part of the book of Leonard Brooks, who also later became a GA President (and about whom I know relatively little), and also mentions the work of Eva Taylor, who I need to investigate in more detail I think.
