00364naa a2200145 a 450000100080000000500110000800800410001910000140006024500440007426000090011865300090012765300130013665300140014977300550016310941941997-10-28       1979    bl ---       0--  u    #d1 aCOWAN, T.  aFactors of pear production and quality.  c1979  aPERA  aPRODUCAO  aQUALIDADE  tProc. Wash. State Hortic. Assoc.gn.75, p.193-195.