TY  - BOOK
AU  - Pontificia Academia Scientiarvm.
TI  - Organic Matter and Soil Fertility
U1  - 631.8 
PY  - 1968///
CY  - New Yark
PB  - John Wiley and Sons
KW  - Agriculture and related technologies
KW  - Technology (Applied sciences)
KW  - Soil fertility
ER  -