TY  - BK
AU  - Roche,P.
AU  - Babre,D.
AU  - Calba,H.
AU  - Fallavier,P.
AU  - Griere,L.
TI  - Phosphorus in tropical soil: Assessing deficiency levels and phosphorus requirements
T2  - IMPHOS Scientific Publication
PY  - 1980///
CY  - Paris (France)
PB  - Institut Mondial du Phosphate (IMPHOS), 
KW  - Phosphorus
KW  - Soil deficiencies
KW  - Tropical soils
ER  -