00413nam a2200145 a 450000100080000000500110000800800410001910000180006024500520007826000710013030000090020165300120021065300320022265300130025411664462009-04-23       1980    bl uuuu     u0uu1 u    #d1 aHAWKES, J. G.  aCrop genetic resources field collection manual.  aBirmingham: University of Birmingham, Dept. of Plant Biologyc1980  a37p.  aManuais  aRecursos geneticos vegetais  aSementes