These 'hardbacks' are of a very poor construction and not properly bound. The hard cover is merely glued to the edges of the backs of the pages. In use the books have to be held open and do not always close properly. This series is printed in USA; seek out a secondhand version printed by the St Andrew's press in the UK and immediately see the difference. A great pity since Barclay's works deserve a much better printing, since his interpretations can be such a great help in trying to understand a lot of the 'whys and wherefores' of the New Testament without just lapsing into diatribes about the formulaic protestant salvation theory.