TY  - BOOK
AU  - 
AU  - MC Robie,Georgeet al.
TI  - Tools for organic farming : A manual of appropriate equipment and treatment
SN  - 1 942850 19 x
U1  - 631.584 
PY  - 1990///
CY  - New York
PB  - Intermediate technology publications
KW  - Crop protection
KW  - intercultivation
ER  -