00301cam a22001097a 4500008004000000082001200040100001200052245004700064260005000111300001200161650001800173180718b1972   xxu||||| |||| 00| 0 eng d  aT82 Un3  aEde, AJ  aAdvantages of the metric systemcby AJ Ede  aLondonbHer Majesty's Stationery Officec1972  av, 92p.  aMetric system