TY  - GEN
AU  - Bolt, G H
AU  - Bruggenwert, M G M
TI  - Soil chemistry : a basic elements
SN  - 0-444-41435-5
U1  - 631.41 SOI.1 
CY  - Newyork, Elsevier scientific publishing co
KW  - soil chemistry / soil conservation / soil pollution
ER  -