Philip Schmidt 3000 solved problems in Precalculus - Newyork Mcgraw Hill Book Co. 1989 - 385p Philip Schmidt: 3000 solved problems in Precalculus. Newyork. Mcgraw Hill Book Co., 1989. 0-70-055365-3--(515SCH) ENGLISH ISBN: 0-70-055365-3 Dewey Class. No.: 515 / SCH