Prado, Marcial. Practical Spanish Grammar: A Self-Teaching Guide. New York: John Wiley & Sons, 1983; Prado, Marcial. More Practical Spanish Grammar: A Self-Teach ing Guide. New York: John Wiley & Sons, 1984Prado, Marcial. Practical Spanish Grammar: A Self-Teaching Guide. New York: John Wiley & Sons, 1983. Pp. viii, 360. $9.95.; Prado, Marcial. More Practical Spanish Grammar: A Self-Teach ing Guide. New York: John Wiley & Sons, 1984. Pp. vi, 378. $9.95.