TY  - BOOK
AU  - Konrad Mengel
AU  -  Ernest A. Kirkby, 
TI  - Principles of Plant Nutrition. Ed 3
U1  - 581.13 
PY  - 1981///
CY  - Worblaufen-Bern
PB  - International Potash Institute
N1  - Konrad Mengel & Ernest A. Kirkby: Principles of Plant Nutrition. Ed 3.  (3rd Ed)  Worblaufen-Bern.  International Potash Institute, 1981.--(581.13MEN)
ER  -