00333nam a2200109Ia 4500008004100000040003800041100001500079245005300094260004600147300001400193653001600207220119s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aTruran,H C 0aPractical guide to statistical maps and diagrams  bHeinemann educational booksaLondonc1977  aiv,60p p.  aCartography