TY  - BOOK
AU  - Williams,S.T.
AU  - Gray,T.R.G.
TI  - Soil Micro-Organics
U1  - 631.4 
PY  - 1971///
CY  - London.
PB  - Longman
KW  - Soil Micro-Organics
KW  - Soil Science
ER  -