TY  - BOOK
AU  - Ryan, John.
ED  - Regional Workshop on Fertilizer Use Efficiency (4: 1991: Agadir, Morocco)
TI  - Fertilizer use efficiency under rain-fed agriculture in west Asia and North Africa: : proceedings
U1  - 631.45 
PY  - 1992///
CY  - Aleppo, Syria
PB  - ICARDA
KW  - Fertilizantes
KW  - Efecto en suelos
KW  - Suelos
KW  - Fertilidad
KW  - Regiones áridas
ER  -