Dear Abu Hasan ,
From my opinion those books will be useful for our study and our busniess specially for whom work in private compnay becuase they used 97% of those vocabularies as you know most of them Indian, Philippines, American, Dutch .. etc... , however I remember my first interview in Riyadh Bank the asked me a lot of questions about my major like what is the loop, how can you write small program by Java, how many language you have, do you know the type servers .... etc ... , in the end I advise everyone to at least read the some of those vocabularies because you will be intrested .