Viktor Leinz was a pioneer who helped establish the first formal geology courses in Brazil at the University of São Paulo (USP) in 1957.
If you need help understanding the specific concept on page 248 of your edition, describe it (e.g., “a diagram of unconformities” or “a table of sedimentary structures”), and I can explain the content without reproducing the copyrighted page. Geologia Geral Viktor Leinz Pdf 248
That number likely refers to: