1. Undersander, D., Martin, N., Cosgrove, D., Kelling, K., Schmitt, M., Wedberg, J., Becker, R., Grau, C., Doll, J.: Alfalfa management guide Creator: Plhák, F. Format: print Type: model:internalpart and TEXT Language: Multiple languages Rights: http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public