TY - BK AU - Vereijken,P.H. ED - Landbouwhogeschool Wageningen (Netherlands) TI - Feeding and multiplication of three cereal aphid species and their effect on yield of winter wheat U1 - 79-463994 PY - 1979/// KW - Pests of plants KW - Wheat triticum spp N1 - Thesis (Dr in de Landbouwwetenschappen). Bibliography (53 ref.); Summaries (En, Nl) T2 - Agricultural Research Reports (Netherlands). no. 888 Wageningen (Netherlands). Pudoc. 1979. 58 p ER -