Dr. and Mrs. Paul Zamostien of Bryn Mawr announce the engagement of their daughter, Jill Alexis Zamostien, to Erez Schnaittacher, son of Mrs. Esther Schnaittacher of Karkur, Israel, and Mr. Richard Schnaittacher of Ridgewood, N.J. Jill, a graduate of Radnor High School, attended Syracuse University,...