Thanks all.
Ivo, the vase on the right is something like. Well spotted.
From the blurb, though, it seems as though the book is a general volume about glass - a look at glass design, manufacture and recycling. And if you say that there's no attribution...
Although the book is from the Uni of Munich, I'm not sure that Bavaria is particularly relevant. For example, I think the green vase is an Ankerglas piece from the 1930s (or perhaps Hoffmann from earlier), and was made at Bernsdorf in Saxony. And a couple of the others (including the one on the right) could be von Streit, Berlin.
So, German or Bohemian? Hmmm.