00369nam a2200157Ia 4500008004100000041001200041082001000053082001100063100001900074100001100093245004500104260001300149260001900162260000900181650002100190150909s9999    xx            000 0 und d  aEnglish  a632.9  bHUF/TH  aHuffaker C B    eEditor  aTheory and pratice of biological control  aNew York  bAcademic Press  c1976  aPlant Protection