I'm Head of Studies at a language academy and I need to find some good Technical English books (leveled: pre-intermediate, intermediate, and upper intermediate) for some Engineering-focused InCompany classes.
I'm familiar with a lot of the resources out there, but it seems to be more complicated to find technical books split into levels.
I've found ¨Tech Talk¨ from Oxford University Press, but they have no upper intermediate level and I'm not even sure if it's still in stock.
Does anyone have any suggestions? I have to order some books ASAP!