%0 Journal Article %T Comparison of different spatial strategies for sampling a core collection of natural populations of fodder crops %A Balfourier Fran£żois %A Charmet Gilles %A Prosperi Jean-Marie %A Goulard Michel %J Genetics Selection Evolution %D 1998 %I BioMed Central %R 10.1186/1297-9686-30-s1-s215 %U http://www.gsejournal.org/content/30/S1/S215