na INLIS000000000029447 Ind 0010-1218011285 Seasonal fluctuations of population density of the cabbage aphid, Brevicoryne brassical (L.) in the Netherlands, and the role of its parasite, Aphidrus (Diaeretiella) Rapae ceurtis MOHAMMED, M.H. M. Hafez Mohammed Wageningen H. Veenman Zonen 1961 101 p.: ill.; 25 cm 101 p.: ill.; 25 cm 632.961MOHs Thesis (Dr)-- Landbowhogeschool te Wageningen, 1961 Bibl. p. 102-104. 632.961 BRASSICA CABBAGES APHIDS NETHERLANDS 281/64-mfn31771 281/64-mfn34334