That said, I can offer some general information and guidance on how you might approach finding what you're looking for:
For students at conservatories (like the Conservatorio Tito Schipa in Lecce), they are often assigned the first 36 measures of a march for sight-reading exams. Therefore, a student searching for "Squinzano Marcia Sinfonica PDF 36" is likely looking for a truncated excerpt to practice a specific difficoltà (difficulty) that occurs at that measure.
The specific mention of "" likely refers to a catalog number, a page count, or a specific file identifier often found in classical music sheet music archives.
Check international music score libraries like (International Music Score Library Project).