00283nam a2200097Ia 4500008004100000082001900041100002300060245004500083260002800128300002900156250404b        |||||||| |||| 00| 0 eng d  a515.1bB265.OI  aBaron, Margaret E.  aOrigins of the infinitesimal calculusb/  aNew York:bDover,c1969  aviii, 304p. Bibl. Index.