TY  - BOOK
AU  - OTTO GRAFF
TI  - PROGRESS IN SOIL BIOLOGY
U1  - GN631.4G758P 
PY  - 1967///
CY  - AMSTERDAM
PB  - NORTH-HOLLAND PUB. COM.
KW  - PROGRESS IN SOIL BIOLOGY
N1  - MODERN BOOK HOUSE
ER  -