00302nam a2200121Ia 4500020001500000082001700015100002200032245005100054260003600105300002900141500000500170700000500175  a0132125897  a516bD636.DG  aDoCarmo, Manfredo  aDifferential geometry of curves and surfacesb  aNew JerseybPrentice-Hallc1976  aviii, 503p. Bibl. Index.  a  a