TY  - GEN
AU  - Bjarnason, Sigfús
TI  - Turnover of organic nitrogen in agricultural soils and the effects of management practices on soil fertility
U1  - 631 
PY  - 1988///
CY  - Uppsala
PB  - Univ.
KW  - NITROGEN RESEARCH SOIL FERTILITY SOIL MANAGEMENT SOIL SCIENCES SOIL TYPES
ER  -