00749naa a2200229 a 450000100080000000500110000800800410001910000190006024501660007926000090024565300280025465300110028265300180029365300160031165300200032765300200034770000180036770000150038570000190040070000260041977300740044510467962006-06-30       2005    bl uuuu     u00u1 u    #d1 aBRESSAN, E. A.  aCollecting yam (dioscorea spp.) and sweet potato (Ipomoea batatas) germplasm in traditional agriculture small-holdings in the Vale do Ribeira, Sao Paulo, Brazil.  c2005  aAgricultura tradicional  aBatata  aDioscorea spp  aGermoplasma  aIpomoea batatas  aVariedade local1 aVEASEY, E. A.1 aPERONI, N.1 aFELIPIM, A. P.1 aSANTOS, K. M. P. dos.  tPlant Genetic Resources Newsletter, Romagn. 144, p. 8-13, dic. 2005.