TY  - GEN
AU  - Arnold, G H
AU  - Prins, W H
TI  - Role of nitrogen in intensive grassland production: proceedings of an international symposium of the European Grass land federation
SN  - 9022007340
U1  - 633.202 PRI 
CY  - The Netherlands, Centre for agricultural publishing & Documentation
KW  - Grass land production role of Nitrogen
ER  -