TY  - BOOK
AU  - Johansson,Olle
TI  - Co-operative research on input/output relationships in use of fertilizers in crop production
U1  -  631.88 
PY  - 0000///[n.d.]
CY  - [Uppsala]
PB  - Organisation for Economic Co-operation and Development
KW  - Sulfur in agriculture
ER  -