003060000a22001330004500020001800000060000800018082001500026100001600041245003400057260002900091260000900120300000800129650003500137  a0 416 71540 0  a100  a633.41 PIT  aPitty,  A F  aGeography and soil properties  aLondon, Methuen & Co Ltd  c1978  a287  aGeography- Soils/ Soil science