It looks like you're looking for the in PDF format, possibly an updated or more recent edition ("upd" = updated).
The Arban method is prized for its logical, step-by-step progression. It doesn't just give you music; it teaches you . arban complete method for tuba pdf upd
If you are serious about tuba performance, this is non-negotiable. It’s great for: Arban Complete Method for Tuba It looks like
Double Tonguing (Page 100+ in most editions). Set your metronome to 60 BPM. Play one bar of "Tu-ku" on a single note (F in the staff). Increase BPM by 2 every day. Do not move on until clean at 100 BPM. Week 3-4: Double Tonguing (Page 100+ in most editions)
An "updated" PDF of the Arban tuba method could refer to: