TY  - BOOK
AU  - Jacob,A.
AU  - Walker,Norman
TI  - Magnesium: the fifth major plant nutrient
U1  - 631.82 
PY  - 1958///
CY  - London
PB  - Staples Press
KW  - Plant nutrients
KW  - Plants
KW  - Nutrition
KW  - Magnesium deficiency disease in plants
KW  - Magnesium
KW  - Magnesium fertilizers
N1  - Includes bibliographical references: p. 149-159
ER  -