00337nam a2200109 a 450000500170000008200200001710000060003711000240004324500840006726000560015130000200020720251203091554.0  a510.76,bD, int  d_  aKlamkin, Murray, S.  aInternational Mathematical Olympiads 1978-1985 and forty supplementary problems  aNew YorkbMathematical association of Americac1986  ax, 142p, 22 cm.