na INLIS000000000029451 Ind 0010-1218011289 Effect of cultural measures on the population density of the fruit tree red spider mite, Metatetranychyus ulmi koch (Acari, Tetranychidal) POST, A Anna Post Wageningen H. Veenman Zonen 1962 102 p.: ill.; 25 cm 102 p.: ill.; 25 cm 632.93VOSe Thesis (Dr)-- Rijksuniversiteit te Leiden Bibl.: p. 103-110 632.93 FRUIT CROPS MITES SPIDER METATETRANYCHUS ULM 130/64-mfn31775 130/64-mfn34338