I am asking about the conventions of abbreviations of pages, for academic/journal purposes. For example, if one submits a paper on arXiv, you will see that some renown physicist/mathematician uses the conventions of:
120 pp. instead of 120 pages.
And if there are more comments like how many figures there are, one can use
120 pp, 10 figures. instead of, 120 pages, 10 figures.
It looks to me that from Usage of "p." versus "pp." versus "pg." to denote page numbers and page ranges, the pp. actually stands for the range of pages, say pp. 10-12 means the page 10 to the page 12.
However, is it nd safe totally acceptable to write 120 pp to mean the 120 pages? How to justify its use? (It is not Latin. No?)