TY  - BOOK
AU  - G.R. Clarke
TI  - Study of soil in the field
U1  - 631.4 
PY  - 1971///
CY  - Oxford
PB  - Clarendon Press
N1  - G.R. Clarke: Study of soil in the field.  (5th Edition)  Oxford.  Clarendon Press, 1971.--(631.4CLA)
ER  -