TY  - BOOK
AU  - Bolt,  G H
AU  - Bruggenwert, M G M
TI  - Soil chemistry: A - Basic elements
T2  - Developments in soil science 5 A
U1  - 631.4:54 
PY  - 1978///
CY  - Amsterdam
PB  - Elsevier
KW  - Basic Elements
ER  -