Not every student needs Jose Maria Relvas. His grammar is dense, technical, and assumes a baseline knowledge of linguistic jargon. Ask yourself:
José Maria Relvas was a distinguished Portuguese linguist and educator, known for his contributions to the study and teaching of the Portuguese language. His work on "Gramática Portuguesa" reflects his deep understanding of the language's structure, syntax, and nuances, making the book an invaluable resource for anyone looking to learn or improve their Portuguese.
Google Books has scanned copies from university libraries (Harvard, UC Berkeley). Depending on your region, you may see "Full View" (downloadable PDF) for the 1914 edition. For later editions (1935), you may only see "Snippet View."