TY  - BOOK
AU  - Donald L. Plucknett
AU  -  Howard B. Sprague, 
TI  - Detecting mineral nutrient deficiencies in tropical and temperate crops
SN  - 0-8133-0089-4
U1  - 632.3 
PY  - 1989///
CY  - Boulder
PB  - Westview Press
N1  - Donald L. Plucknett & Howard B. Sprague: Detecting mineral nutrient deficiencies in tropical and temperate crops.  Boulder.  Westview Press, 1989. 0-8133-0089-4--(632.3PLU)
ER  -