00278nam a2200121Ia 4500082002000000100002000020245002200040260003600062300003100098490001700129500000500146700000500151  a515.9bSc333.NF  aSchiff, Joel L.  aNormal familiesb  aNew YorkbSpringer-Verlagc1993  axii, 236p. Index. Appendix  aUniversitext  a  a