Philip Zieger Collins Books 1972
While there have been more recent studies of the great plague, this was one of the first to concentrate upon the plague and its impact, rather than dealing with it as an aside or part of general medieval history. As such it remains a useful read, especially if you like figures, more figures, charts, tables etc.
Covering the spread of the plague across western Europe and north Africa before more detailed analysis of the spread through England and Wales and then moving onto the after effects, such as the increasingly rapid devolution of feudalism, the decline in standards of education, the rise of land owning peasents and personal spirituality as opposed to dependence upon the orgainised church, etc.
A solid and disturbing read of a society pushed to the very edge.