00321nam a2200121 a 450000500170000002000150001708200200003210000190005224500140007126000290008530000200011449000650013420251203090446.0  a0521077346  a516.08,bD, egg  aEggleston, H.G  aConvexity  aLoNew DelhionbCUPc1977  aviii,141p, 22cm  aCambridge tracts in mathematics and mathematical physicsd47