00286nam a2200109 a 450000500170000008200200001710000060003711000240004324500310006726000560009830000220015420251203091554.0  a510.76,bD, usa  d_  aKlamkin, Murray, S.  aUSA mathematical Olympiads  aNew YorkbMathematical Association of Americac1992  axii, 128p, 22 cm.