TY  - BOOK
AU  - Mengel Konrad
AU  - Kirby Ernest A
TI  - Principles of plant nutrition
SN  - 1-4020-0008-1
U1  - 631.8 
PY  - 2001///
CY  - Dordrecht
PB  - Kluwer Academic
KW  - Plant nutrition
ER  -