Bozza En Foret Errata?

Happy Holidays everyone! I have a student preparing Bozza's En Foret. We have discovered what I believe to be a printing issue (see attached) and I've heard different versions on YouTube recordings.

There is a treble clef printed in my student's copy one measure after rehearsal marking 17...but no change to a different clef prior! This solo was purchased just this past summer and is likely a version printed after 2000. I have an earlier version from the mid-1970's, but unfortunately I don't have access to it at the moment.

As mentioned, I've listened to several recordings on YouTube and there are differing interpretations of the note 3 measures before 17; some play as notated in the attachment, some play an octave lower. It would be nice to see the original manuscript or a published copy from the original plate(s). Any information you can share would be appreciated! 
 

hello, happy new year, so what happens in this place is that the A is the culmination of this semi-phrase and some colleagues who still can't play well in the low register choose to play an octave higher but it's originally a low A, I hope I helped.

What's missing is a bass clef at the end of the 4th bar/measure before 17 - there's just room for it in it's correct place, in both the solo part and the piano part. Any student of Prof Devemy's at the Paris Conservatoire would have been able to play the low A as well as he could play the low B 8 bars earlier, or else he wouldn't have been entered for the Concours!

If there is a missing bass clef sign for the 3 measures before 17, that would have the written note be a C.
Is the note in those measures supposed to be an A (perhaps an octave lower than written in treble clef), or is it supposed to be a base clef C.
confused ...