00449nam a2200133Ia 4500008004100000082002500041100002800066245008000094260002600174300001000200600002200210600005000232650003300282140224s9999    xx            000 0 und d  a632.93:575(082.2) L7  aHewitt, William B., ed.  aPlant health and quarantine in international transfer of genetic resources.  aOhiobCRC Pressc1977  a346p.  aChiarappa  Luigi   aEdited  William B.Hewitt and Luigi Chiarappa.  aGenetic resources,Quarantine