TY  - BOOK
AU  - Gray,T.R.G.
AU  - Williams,S.T.
TI  - Soil micro-organisms
SN  - 0582441609
AV  - QR111 .G7 1975
U1  - 631.4/6 
PY  - 1971///
CY  - London, New York
PB  - Longman
KW  - Soil microbiology
N1  - Includes indexes; Bibliography: p. 197-234
ER  -