TY  - BOOK
AU  - Whitehead,C.D.
TI  - Some aspects of the influence of organic matter on soil fertility / 
PY  - 1963///
CY  - Ashford, Kent  : 
PB  - Wye College, 
KW  - Humus
KW  - Soil fertility
N1  -  Reprinted from Soils and Fertilizers, vol. XXVI, 1963 no. 4;  Includes bibliographical references : p. 222-223
ER  -