00280nam a2200109 a 450000500170000000800410001704100080005810000180006624500360008426400390012030000110015920260716125014.0260701s1979    ii            000 0 eng d  aeng1 aBloom, Arthur10aGeomarphology /cBloom, Arthur. 1apune :bNarendra Prakashan,c1979.  a510 p.