Diccionario de dificultades de la lengua española
The Diccionario de dificultades contains more than 70,000 articles in which numerous grammar doubts are answered. It is prepared keeping in mind the most frequently used errors in the Spanish language. Includes a grammar summary that serves as reference to the dictionary. As well as a useful compilation of prefixes and suffixes, abbreviations, place names, foreign abbreviations and idioms.
