00575naa a2200193 a 450000100080000000500110000800800410001910000120006024500910007226000090016365000120017265000110018465000160019565000120021165000160022365000170023965300220025677301030027818308462010-01-10       1960    bl ---       0--  u    #d1 aITO, Y.  aEcological studies on population increase and habitat segregation among barley aphids.  c1960  aAfídeo  aCevada  aCrescimento  aDoença  aPopulação  aSegregação  aEstudo ecológico  tBulletin of the National Institute of Agricultural Science, ser. C, Tokyogv. 11, p. 45-130, 1960.