TY  - BOOK
AU  - FRANK KNOWLES
TI  - A PRACTICAL COURES IN AGRICULTURAL CHEMISTRY
U1  - GN631.4K762P 
PY  - 1947///
CY  - LONDON
PB  - MACMILLAN & COM. LTD.
KW  - A PRACTICAL COURES IN AGRICULTURAL CHEMISTRY
ER  -