00680    a2200157   4500020001500000082001700015245021300032260002800245300002100273440004000294650006000334650003100394650004100425650002300466650003300489  a9290432144  a631.523bINT  aInternational beta genetic resources networkba report on the 2nd international beta genetic resources workshop held at the institute for crop science and plant breeding,braunschweig, Germany ,24-28 june 1991  aRomebIBPGRc1992g1992  alxxix,74p.c30cm  aInternational crop network series 7  aPRODUCTION OF PROPAGATIONAL ORGANISMS AND NEW VARIETIES  aCULTIVATION AND HARVESTING  aAGRICULTURAL AND SPECIFIC TECHNIQUES  aSPECIAL TECHNIQUES  aDEVELOPMENT OF NEW VARIETIES