00371nam a2200133Ia 4500008004100000041000800041084001500049100001900064245006800083250001200151260004500163653001400208653001500222160808s1986    xx            000 0 eng d  aeng  aV(B28)2CC  aMahmood, Aslam  aStatistical methods in geographical studies /cby Aslam Mahmood  a2nd ed.  aNew Delhi :bRajesh Publications,c1986.  aGeography  aStatistics