00277nam a2200109Ia 4500082001900000100002200019245008800041260002200129300000600151500000500157700000500162  a510.8bT251.OD  aTchebychef, P. L.  aOEuvres de P. L. Tchebychef; Publiees parles sions de MM. A. Markoff and N. Soninb  aNew YorkbChelsea  a   a  a