It really is a compact plant of the English language, very well laid out, the word definitions are kept simple and clear, the vocabulary is with 140000 words certainly extensive enough to meet school and even student claims.
In the middle there is even a part which helps when writing texts, some basic Grammtikregeln be refreshed here shortly.
Overall, especially for this price, a very comprehensive work, recommended.
The only complaint on my part: In this size of the book (well 1200 pages) and the intended use by students, I would prefer a bound work ... which should then be like four or five euros more expensive. Here is something probably no longer be found ... for whatever reason.