00330nam a2200109 a 450000500170000000800410001704100080005810000180006624500810008426400440016530000110020920260717091717.0260717s1994    ii            000 0 eng d  aeng1 aSharma, B. L.10aNature of geography as perceived in systems in theory vol-I /cSharma, B. L. 1aDelhi :bDaya Publication House,c1994.  a236 p.