TY  - BOOK
AU  - Olofsson, Stina
TI  - Influence of preceding crop and crop residue on stand and yield of winter wheat in different tillage systems, including zero tillage
U1  - 633.111 043I 
PY  - 1993///
CY  - Uppsala, Sweden
PB  - Swedish Univ. Agricultural Sciences
KW  - WHEAT
KW  - TILLAGE
ER  -