00290nam a22001097a 4500020001500000040000900015082001300024100001500037245004700052260003400099650004700133  a0859505219  cNust  a510bBOS  aL. Bostock  aMathematics - The core course for A- level  aLondon:bELBS Society,c1987.  aMathematics - The core course for A- level