In response to Brandi Cerreto's letter on liturgy translations, I recommend an excellent book written on the very subject, and dealing with "pro multis" in detail.
The book, by Fr P.D. Meuli, is titled Res Sacramenti, and is obtainable from him at Mount St Mary's Church, 4, Rangiwai Road, Titirangi, Auckland 1007, New Zealand, costing US$5.00 per copy.
Fr Meuli is Rotal Advocate Barrister and Solicitor of the High Court of New Zealand. His email and web addresses are in the front of his book.