How do I interpret fines in the Code of Federal Regulations?

I’m looking at a US government document codifying regulations for the National Organic Program. Specifically, one part says (bolding mine):

What the heck does §3.91(b)(1)(xxxvii) mean? As far as I can tell, there is no section 3.91 in that document or in the overall CFR… :confused:

The trick is that the CFR’s first-level breakdown is into Titles, many of which are broken into Parts and Subparts. You were looking at a Subpart of Title 7, Agriculture. You needed to go to the full Title 7, then find Sec. 3.91 and leaf down it to the relevant penalty, which is as follows:

Relevant section is here.

Ahhh. Beautiful answer.

I feel enlightened. Thank you!