Literaturrecherche

Literatur Frese L (1994) IDBB : International Database for Beta. Int Crop Network Ser 11: 21

Literatur Frese L (1992) Progress report of the International Database for Beta (IDBB). Int Crop Network Ser 7:9-26

Literatur Frese L, Hazekamp T (1992) Application of mapping systems for the analysis of the geographical origin of collected material. Int Crop Network Ser 7:69-70

Literatur Frese L (1991) The world Beta network. Int Crop Network Ser 4:101-105

Literatur Letschert JPW, Lange W, Frese L, Berg RG van den (1989) Taxonomy of Beta section Beta Report : International Workshop on Beta Genetic Resources. Int Crop Network Ser 3:64-70

Literatur Frese L, Hintum TJL van (1989) The International Data Base for Beta : Appendix 3. Int Crop Network Ser 3:17-45

Literatur Frese L (1989) Regeneration: a survey on current state of collections (Report). Rome: IBPGR, 49-55 p, Int Crop Network Ser 3