TY  - BOOK
AU  - Seifert, A.
TI  - Evenness of furrow depth in ploughing
U1  - 631.312 S27E 
PY  - 1962///
CY  - Bedford, U.K.
PB  - National Institute of Agricultural Engineering
KW  - PLOUGHING
KW  - AGRICULTURAL IMPLEMENTS
ER  -