TY  - BOOK
AU  -  Clements,J.B.
AU  -  Topham,P.
TI  -  Water and the land / 
U1  -  631.45 
PY  - 1940///
CY  -  London : 
PB  -  Humphrey Milford : ,  Oxford Univ. Press, 
KW  -  Soil erosion
KW  -  Soil degradation
ER  -