Organic farming and energy efficiency.
Zoebl
Dirk
D
D000383:Agriculture / Q000379:methods*; D018556:Crops, Agricultural / Q000254:growth & development*; D017753:Ecosystem; D005308:Fertilizers; D012987:Soil; D014908:Triticum / Q000254:growth & development
D005308:Fertilizers; D012987:Soil