00382nam a2200121Ia 4500008004100000040001700041082002400058100001400082245005200096260003500148300001500183650006200198190328s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta311.26bH174C  aHall, A S 4aThe Constitution of graphs and chartscA S Hall  aLondonbSir Issac Pitmanc1958  axii, 172p.  aStatistics; Statistics-Charts, diagrams etc; Graph theory