TY - GEN TI - Barley genetic resources : report of a n international barley genetic resourc es workshop held at Helsingborg Kongre sscenter Helsingborg, Sweden 20-21 Jul y 1991 U1 - 633.1 PY - 1992/// CY - Rom PB - IBPGR KW - BARLEY GENETIC RESOURCES IBPGR ER -