00271nam a2200133Ia 4500020001800000082001000018100002200028245003200050250000800082260002400090300000800114500000900122650000600131  a0-04-445715-4  a551.4  aGoudie, Andrew S. 0aGeomorphological Techniques  a2nd  aLondonbUnwin Hyman  a570  a1140  a-